Keystone XL Pipeline Project: Key Issues
Paul W. Parfomak
Specialist in Energy and Infrastructure Policy
Neelesh Nerurkar
Specialist in Energy Policy
Linda Luther
Analyst in Environmental Policy
Vanessa K. Burrows
Legislative Attorney
March 21, 2011
Congressional Research Service
7-5700
www.crs.gov
R41668
CRS Report for Congress
P
repared for Members and Committees of Congress

Keystone XL Pipeline Project: Key Issues

Summary
Canadian pipeline company TransCanada has filed an application with the U.S. Department of
State to build the Keystone XL pipeline, which would transport crude oil from the oil sands
region of Alberta, Canada, to refineries in the United States. Keystone XL would have the
capacity to transport 700,000 barrels per day, delivering crude oil to the market hub at Cushing,
OK, and further to points in Texas. The project is expected to cost more than $7.0 billion, of
which at least $5.4 billion would be spent on the U.S. portion. TransCanada is planning to build a
short additional pipeline so that oil from the Bakken formation in Montana and North Dakota can
also be carried on the Keystone XL pipeline.
The construction of petroleum facilities connecting the United States with a foreign country
requires a Presidential Permit from the State Department based on a determination of national
interest. An element of that determination for the Keystone XL project is the preparation of an
Environmental Impact Statement (EIS) pursuant to the National Environmental Policy Act. On
April 16, 2010, the State Department’s draft EIS for the Keystone XL project was released for
comment to the general public and interested state and local agencies. Subsequently, the U.S.
Environmental Protection Agency determined the EIS to be inadequate. On March 15, 2011, the
State Department announced that it expects to issue a supplemental draft EIS in mid-April 2011.
It will be available for 45-day public comment. The State Department also announced that,
following issuance of a final EIS, it will solicit additional public comment and host a public
meeting before making a determination on granting a Presidential Permit. The State Department
estimates that it will release a final EIS and final Record of Decision and National Interest
Determination by the end of 2011. Whatever the State Department’s decision, legal challenges
appear likely.
Opponents to the Keystone XL pipeline project, primarily environmental groups and affected
communities along the route, object to the project principally on the grounds that it supports
“dirty” Canadian oil sands development, that it could pose an environmental risk to groundwater,
and that it promotes continued U.S. dependency on fossil fuels. Arguments criticizing the
greenhouse gas emissions of oil sands production are based to some degree on the belief that
limiting pipeline capacity to U.S. markets may limit output from Canada’s oil sands.
Proponents of the Keystone XL pipeline, including Canadian agencies and petroleum industry
stakeholders, point to energy security and economic benefits, such as job creation. Some contend
that the Keystone XL project secures growing Canadian oil supplies for the U.S. market, which
could offset imports from other, less dependable foreign sources. They also claim that if oil sands
output cannot flow to the United States, infrastructure to export it to Asia will develop. Further,
having recently permitted the original Keystone pipeline, the State Department could face a
consistency challenge if it were to come to a different conclusion on similar environmental issues
for the Keystone XL permit.
International pipeline projects like Keystone XL are not subject to the direct authority of
Congress, but numerous Members of Congress have expressed support for, or opposition to, the
pipeline proposal because of its potential environmental, energy security, and economic impacts.
Congress may have an oversight role stemming from federal environmental statutes that govern
the pipeline’s application review process.
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Keystone XL Pipeline Project: Key Issues

Contents
Introduction ................................................................................................................................ 1
Pipeline Description and Status ............................................................................................. 1
Keystone XL Extension to Bakken Oil Production .......................................................... 2
Presidential Permit Application Requirements ....................................................................... 3
Environmental Review Under the National Environmental Policy Act ............................. 4
A Record of Decision and National Interest Determination.............................................. 5
State Siting and Environmental Approvals............................................................................. 6
Arguments For and Against the Pipeline...................................................................................... 6
Impact on U.S. Energy Security ............................................................................................ 7
Canadian Oil Imports in the Overall U.S. Supply Context ............................................... 7
Impact of Increased Oil Sands Crude Supply to the United States .................................... 9
Economic Impact of the Pipeline......................................................................................... 11
Canadian Oil Sands Environmental Impacts ........................................................................ 11
Possible Risks to the Ogallala Aquifer ................................................................................. 12
Fossil Fuels Dependence ..................................................................................................... 13
Consistency of State Department Review .................................................................................. 14

Figures
Figure 1. TransCanada Keystone Pipeline System Routes ............................................................ 2
Figure 2. U.S. Oil Imports, Selected Sources ............................................................................... 8
Figure 3. Total U.S. Oil Imports .................................................................................................. 9
Figure 4. Keystone XL Pipeline Route Across the Ogallala Aquifer ........................................... 13

Appendixes
Appendix. Presidential Permitting Authority ............................................................................. 15

Contacts
Author Contact Information ...................................................................................................... 16

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Keystone XL Pipeline Project: Key Issues

Introduction
In September 2008, TransCanada (a Canadian company) applied to the U.S. Department of State
for a permit to cross the U.S.-Canada international border with the Keystone XL pipeline project.
If constructed, the pipeline would carry crude oil produced from the oil sands region of Alberta,
Canada, to U.S. Gulf Coast refineries. Because the pipeline would connect the United States with
a foreign country, it requires a Presidential Permit issued by the State Department. Some
Members of Congress have expressed support for the proposed pipeline’s energy security and
economic benefits while others have expressed reservations about its environmental impacts.
Though Congress has no direct role in permitting the pipeline’s construction,1 it may have an
oversight role stemming from federal environmental statutes that govern the pipeline’s
application review process.
This report describes the Keystone XL pipeline proposal and the process required for federal
approval. It summarizes key arguments for and against the pipeline put forth by the pipeline’s
developers, federal agencies, environmental groups, and other stakeholders. The report discusses
potential consistency challenges faced by the State Department in reviewing the pipeline
application given its recent prior approvals of similar pipeline projects. Finally, the report reviews
the constitutional basis for the State Department’s authority to issue a Presidential Permit, and
opponents’ possible challenges to this authority.
Pipeline Description and Status
The U.S. portion of the Keystone XL pipeline project would pass through Montana, South
Dakota, Nebraska, Oklahoma, and Texas (Figure 1). The pipeline would consist of approximately
1,380 miles of 36-inch-diameter pipe and have the capacity to transport 700,000 barrels per day
(bpd) of crude oil to the United States, delivering crude to an existing oil terminal in Oklahoma
and further to points in Texas. By increasing its pumping capacity in the future, the pipeline could
ultimately transport up to 900,000 bpd.2

1 See, for example, U.S. Senator Max Baucus, Letter to Secretary of State Hillary Rodham Clinton, September 10,
2010, http://baucus.senate.gov/?p=press_release&id=179; U.S. Representative Henry A. Waxman, Letter to Secretary
of State Hillary Rodham Clinton, July 2, 2010, http://democrats.energycommerce.house.gov/documents/20100706/
State.070210.Clinton.Keystone.XL.pdf.
2 U.S. Department of State, Draft Environmental Impact Statement for the Keystone XL Oil Pipeline Project, April 16,
2010. p. ES-2.
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Figure 1. TransCanada Keystone Pipeline System Routes

Source: TransCanada, Inc., Keystone Pipeline System, May 2010, http://www.transcanada.com/docs/
Key_Projects/keystone_may_2010.pdf.
Note: Figure 1 shows the preferred alternative for the Keystone XL pipeline
route according to Presidential Permit application documents. For discussion
of alternative routes, see the State Department EIS discussed below.
The Keystone XL project is expected to cost more than $7.0 billion, with the U.S. portion
accounting for at least $5.4 billion of that total.3 Current cost estimates include cost increases
since the project’s initial permit application was filed reportedly due to currency swings, changing
regulatory requirements, and permitting delays.4 The Keystone XL pipeline would be an
extension of TransCanada’s existing Keystone pipeline, which links the Alberta oil sands to
refineries in Illinois and Oklahoma (Figure 1). The Keystone pipeline received State Department
approval on March 17, 2008, and began commercial operation in June 2010.
Keystone XL Extension to Bakken Oil Production
The Bakken formation is an unconventional oil resource in the Williston Basin, which underlies
parts of North Dakota, eastern Montana, and northwestern South Dakota.5 Current Bakken

3 TransCanada Keystone Pipeline, L.P., Application of TransCanada Keystone Pipeline L.P. for a Presidential Permit
Authorizing the Construction, Operation, and Maintenance of Pipeline Facilities for the Importation of Crude Oil to be
Located at the United States-Canada Border, U.S. Dept. of State, September 19, 2008, p. 10,
http://www.keystonepipeline-xl.state.gov/clientsite/keystonexl.nsf/presidentialpermitapplication.pdf?
OpenFileResource.
4 “TransCanada Expects $1-Billion Cost Escalation for Keystone XL Pipeline,” Canadian Press, February 17, 2011.
5 Steven G. Grape, Technology-Based Oil and Natural Gas Plays: Shale Shock! Could There Be Billions in the
Bakken?
, Energy Information Administration, U.S. Department of Energy, November 2006, http://www.eia.doe.gov/
(continued...)
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production is around 350,000 bpd, much of which is currently taken away by rail and truck.6 In
part, this is because infrastructure has not kept up with rapid production growth in the Bakken
region in recent years. Output is expected to increase significantly in the future.7
TransCanada has signed contracts with Bakken oil producers to carry 65,000 bpd from the region
via the Keystone XL pipeline. While not the full 100,000 bpd TransCanada had offered, this was
enough to justify the Bakken Marketlink Project, a pipeline running from Baker, MT, to the
Keystone XL pipeline, which can then carry crude to the oil hub at Cushing, OK, and on to the
Gulf Coast.8 The Bakken Marketlink would have a 100,000 bpd capacity and is estimated to cost
$140 million. It could start operating in 2013 if it and the Keystone XL pipeline receive
regulatory approvals.9
These new Bakken contracts also improve the economics for Keystone XL, raising its committed
capacity from 75% to near 90%.10 Lower transportation costs and access to new markets may
support investment in the Bakken. And TransCanada is not the only company adding pipeline
capacity. Notably, Enbridge, another Canadian pipeline company, is building a 145,000 b/d
pipeline in the same time frame. According to Enbridge, sufficient pipeline capacity has been
slow to emerge in the region because “they’re smaller players in the Bakken. They are not able to
make the 20-year commitments and it’s been a lot of work to get them to commit to the level that
[is] required to underwrite a major project out of the Bakken.”11
Presidential Permit Application Requirements
Ordinarily, the U.S. government does not have permit authority for oil pipelines, even interstate
pipelines. This is in contrast to interstate natural gas pipelines, which, under Section 7(c) of the
Natural Gas Act, must obtain a “certificate of public convenience and necessity” from the Federal
Energy Regulatory Commission (FERC).12 However, the construction, connection, operation, and
maintenance of a pipeline that connects the United States with a foreign country requires
executive permission conveyed through a Presidential Permit. Since the Keystone and proposed
Keystone XL pipelines are designed for the importation of oil from Canada, their facilities require
a Presidential Permit from the State Department.13

(...continued)
pub/oil_gas/natural_gas/feature_articles/2006/ngshock/ngshock.pdf.
6 Nathan Vanderklippe, “TransCanada to move U.S. crude through Keystone,” The Globe and Mail, January 26, 2011.
7 Energy Information Administration, U.S. Department of Energy, Annual Energy Outlook 2011 Early Release,
December 16, 2010, p. 8, http://www.eia.gov/forecasts/aeo/pdf/0383er(2011).pdf.
8 Jeffrey Jones, “TransCanada plans U.S. Bakken pipeline link,” Reuters, January 20, 2011.
9 TransCanada, “TransCanada to Transport U.S. Crude Oil to Market Bakken Open Season a Success,” press release,
January 11, 2011, http://www.transcanada.com/5631.html.
10 Vanderklippe, 2011.
11 Lauren Krugel, “TransCanada attracts support for Montana-to-Oklahoma crude pipeline,” The Canadian Press,
January 20, 2011.
12 15 USC § 717f(c).
13 See Executive Order 13337, “Issuance of Permits With Respect to Certain Energy-Related Facilities and Land
Transportation Crossings on the International Boundaries of the United States,” 69 Federal Register 25299, as
amended, and Department of State Delegation of Authority No. 118-2 of January 26, 2006. The source of Permitting
Authority for relevant Executive Orders is discussed further in the Appendix.
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To issue a Presidential Permit, the State Department must find that issuance would serve the
national interest. In the course of processing such applications, the State Department consults
extensively with concerned federal and state agencies, and invites public comment in arriving at
its determination. With respect to the application submitted by TransCanada, the State
Department concluded that the issuance of the Presidential Permit would constitute a major
federal action that could have a significant impact upon the environment within the meaning of
the National Environmental Policy Act (NEPA) of 1969.14 For this reason, the State Department is
preparing an Environmental Impact Statement (EIS) to assess the environmental impacts that
could result if the Keystone XL Pipeline project were approved.15
Environmental Review Under the National Environmental Policy Act
Broadly, NEPA requires that federal agencies consider the environmental impacts of their actions
before proceeding with them and that they inform the public of those environmental impacts. In
processing Presidential Permit applications, the State Department is responsible for coordinating
compliance with NEPA and other environmental requirements applicable to the pipeline (not just
for the border crossing).16 The EIS must identify any state, tribal, or federal licenses, permits, or
approvals applicable to the project in the United States. The State Department is ultimately
responsible for the content of the EIS, but relies on information provided by TransCanada. For
example, TransCanada’s permit application included an Environmental Report which was
intended to provide the State Department with sufficient information to understand the scope of
potential environmental impacts of the project.17
The EIS must include a statement of the purpose and need for action, a description of all
reasonable alternatives to meet that purpose and need, a description of the environment to be
affected by the alternatives under consideration, and an analysis of the impacts to each
environment identified, including cumulative impacts of the project. It is prepared in two stages,
resulting in a draft and a final EIS.18 During preparation of the draft EIS, the State Department, as
the “lead agency” under NEPA, requested input from any agency with jurisdiction by law or
special expertise regarding any environmental impact involved in the project (referred to as
“cooperating agencies”).19 Cooperating agencies for the Keystone XL project include the U.S.
Environmental Protection Agency (EPA), the Army Corps of Engineers, and the U.S. Department
of Agriculture’s Farm Service Agency, among others. In addition to its role as a cooperating
agency in the EIS process, the EPA is required to review the EIS itself to rate its adequacy and to

14 42 U.S.C. § 4321 et seq.
15 For more analysis of oil sands and their environmental impacts, see CRS Report RL34258, North American Oil
Sands: History of Development, Prospects for the Future
, by Marc Humphries.
16 Presidential Permits state that, by authorizing the permit, the State Department has considered requirements of
Section 7 of the Endangered Species Act (16 U.S.C. 1536) and other statutes related to environmental concerns, the
National Historic Preservation Act (NHPA) of 1966 (16 U.S.C. Section 470f), and Executive Order 12898 of February
11, 1994 (59 Federal Register 7629), concerning environmental justice.
17 Documents submitted by TransCanada are available online at http://www.keystonepipeline-xl.state.gov/clientsite/
keystonexl.nsf?Open.
18 For more analysis of NEPA requirements, see CRS Report RL33152, The National Environmental Policy Act
(NEPA): Background and Implementation
, by Linda Luther.
19 40 C.F.R. § 1508.5. Also, Executive Order 13337 directs the Secretary of State to refer an application for a
Presidential Permit to other specifically identified federal departments and agencies on whether granting the application
would be in the national interest.
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rate a project’s environmental impacts on a range from “lack of objections” to “environmentally
unsatisfactory.”20
Both NEPA and the Presidential Permit approval process require that the public be informed of
the environmental impacts of the project and be allowed to comment. Public involvement within
the context of the Presidential Permit process may be more extensive than that required under
NEPA, particularly for a high-profile or controversial project.
The State Department released for public comment its draft EIS for the proposed Keystone XL
Pipeline project on April 16, 2010.21 The public comment period officially closed on July 2, 2010.
On July 16, 2010, the EPA issued its rating of the draft EIS, determining that it was “inadequate”
and identifying a number of potential environmental impacts that had not been sufficiently
addressed.22 Among other concerns, EPA believed that the purpose and need of the project had
been too narrowly crafted, that impacts to air and water quality were not fully analyzed, and that
pipeline safety procedures were inadequate. In the wake of the EPA’s comments and public
comments, the State Department announced that it expects to publish a supplemental draft EIS in
mid-April 2011.23 The public will have 45 days to comment on the supplemental draft EIS. After
consideration of public and relevant agency comments a final EIS may be issued.
A Record of Decision and National Interest Determination
In arriving at its final decision regarding a Presidential Permit, NEPA requires only that the State
Department assess the environmental consequences of an action and its alternatives before
proceeding. If the adverse environmental effects of the proposed action are adequately identified
and evaluated, the agency is not constrained by NEPA from deciding that other benefits outweigh
the environmental costs and moving forward with the action. The Presidential Permit requires a
determination that the proposal is in the national interest. It is possible that, based on
environmental impacts, a project may be deemed not in the national interest.
Once the final EIS is approved and the agency decides to take action, under NEPA, the State
Department must prepare a public record of decision (ROD). Generally, once the ROD has been
issued, an agency action may proceed (as long as approvals from relevant states are received and
other statutory requirements are met). Under previous Presidential Permit applications for
pipeline projects, the ROD and the National Interest Determination were issued in the same
document.24
Providing for additional public comment after issuing a final EIS is not required under NEPA.
However, following issuance of an EIS for the Keystone XL pipeline, the State Department has

20 For more information on the EPA’s role in the NEPA process, “Environmental Impact Statement (EIS) Rating
System Criteria” at http://www.epa.gov/compliance/nepa/comments/ratings.html.
21 Documents prepared by the U.S. Department of State related to its NEPA requirements are available online at
http://www.keystonepipeline-xl.state.gov/clientsite/keystonexl.nsf?Open.
22 U.S. Environmental Protection Agency, Letter to the U.S. Department of State on the draft EIS for the Keystone XL
project, July 16, 2010, http://yosemite.epa.gov/oeca/webeis.nsf/%28PDFView%29/20100126/$file/20100126.PDF.
23 U.S. Department of State, “State Department Announces Next Steps in Keystone XL Pipeline Permit Process,” press
release, March 15, 2011, http://www.state.gov/r/pa/prs/ps/2011/03/158402.htm.
24 U.S. Department of State, “Department of State Record of Decision and National Interest Determination,
TransCanada Keystone Pipeline, LP Application for Presidential Permit,” February 25, 2008.
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announced that it will solicit public comment and host a public meeting in Washington, DC,
before it makes a determination under Executive Order 13337 on whether issuance of this permit
is in the U.S. national interest.25 This additional round of public comment is being provided apart
from NEPA requirements. It is unclear how, or if, any public comments may be incorporated into
a final ROD.
After the ROD is issued, legal challenges to the NEPA process may occur. Any element of the
State Department’s NEPA compliance may be challenged. Statements made by stakeholders
opposed to the Keystone XL project indicate that challenges may include assertions that State
Department officials did not consider all reasonable alternatives to meet their stated goals; that
environmental impacts, including cumulative impacts, of the pipeline were not fully considered;
or that the public was not provided sufficient opportunity for input. Another possible NEPA
challenge relates to public statements made by Secretary Clinton in October 2010 that she was
“inclined to” approve the pipeline. At the time, environmental groups charged that this statement
indicated that a final decision had been made, before the NEPA process was complete.26
State Siting and Environmental Approvals
In the absence of federal government siting authority (apart from the border crossing), state laws
establish the primary siting authority for the Keystone XL pipeline. These laws vary from state to
state. South Dakota, for example, required TransCanada to apply for a permit for the Keystone
XL pipeline from the state public utility commission, which issued the permit on April 25, 2010.27
Montana requires a certificate from the state’s Department of Environmental Quality, but has not
yet granted one for the Keystone XL project. Nebraska does not appear to have any permitting
requirements that apply specifically to the construction and operation of oil pipelines, although a
state statute does include an “eminent domain” provision, which grants eminent domain authority
to oil pipeline companies that are unable to obtain the necessary property rights from the relevant
property owners.28 A number of additional state and environmental approvals and permits
required by the states along the proposed route are summarized in TransCanada’s Presidential
Permit application.29 All of the aforementioned state approvals are in various stages of review
along the proposed Keystone XL pipeline route.
Arguments For and Against the Pipeline
Proponents of the Keystone XL pipeline, including Canadian agencies and U.S. and Canadian
petroleum industry stakeholders, base their positions primarily on increasing the diversity of the

25 U.S. Department of State, “State Department Announces Next Steps in Keystone XL Pipeline Permit Process,” press
release, March 15, 2011, http://www.state.gov/r/pa/prs/ps/2011/03/158402.htm.
26 Josh Funk, Washington Post, “Groups Ask Clinton to Recuse Self on Pipeline Bid,” November 4, 2010.
27 South Dakota Public Utilities Commission, Final Decision and Order; Notice of Entry Before the Public Utilities
Commission of the State of South Dakota, In the Matter of the Application by Transcanada Keystone Pipeline, LP for a
Permit Under the South Dakota Energy Conversion and Transmission Facilities Act to Construct the Keystone Pipeline
Project, HP07-001, http://puc.sd.gov/commission/orders/HydrocarbonPipeline/2008/hp07-001.pdf.
28 Neb. Rev. Stat. § 57-1101.
29 TransCanada Keystone, L.P., Keystone XL Project: Preliminary Environmental Report, September 2008, Table 7,
http://www.keystonepipeline-xl.state.gov/clientsite/keystonexl.nsf/preliminaryenvironmentalreport.pdf?
OpenFileResource.
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U.S. petroleum supply and economic benefits to the United States, including job creation.
Opponents, primarily environmental groups and affected communities along the route, object to
the project principally on the grounds that Canadian oil sands development has negative
environmental impacts and that it promotes continued U.S. dependency on fossil fuels. These
issues are further discussed below.
Impact on U.S. Energy Security
In its Presidential Permit application, TransCanada asserts that constructing the proposed
Keystone XL pipeline is in the U.S national interest to maintain adequate crude oil supplies for
U.S. refineries. The application argues that the pipeline will allow U.S. refiners to substitute
Canadian supply for other foreign crude supply and to obtain direct pipeline access to secure and
growing Canadian crude output. In particular, the application asserts that the pipeline would allow
the United States to decrease its dependence on foreign crude oil supplies from Mexico and
Venezuela, the two largest oil importers into the U.S. Gulf Coast.30 In its draft EIS for the project,
the State Department similarly finds that the Keystone XL pipeline “would counteract insufficient
domestic crude oil supply while reducing U.S. dependence on less reliable foreign oil sources.”31
These arguments have taken on additional weight in light of the ongoing political unrest in the
Middle East, which has disrupted oil production in Libya, a significant oil exporter, and has
caused a spike in global crude oil prices.
Canadian Oil Imports in the Overall U.S. Supply Context
Gross U.S. imports of crude oil and petroleum products have averaged 11.7 million barrels a day
(Mb/d) over the last 12 months.32 Exports averaged 2.2 Mb/d, leaving net imports at 9.5 Mb/d.33
U.S. imports declined each year between 2005 and 2010 as a result of lower total oil demand and
higher domestic supply. Domestic demand has decreased by about 1.7 Mb/d versus 2005 levels
due largely to the economic recession. Meanwhile, U.S. production of oil and oil alternatives
(including crude oil, natural gas liquids, and biofuels) has increased by 1.4 Mb/d since 2005. As a
result, net imports fell by roughly 3.1 Mb/d since 2005.34 This decline could be mitigated in the
near term as oil demand recovers from the recession or if domestic supply were to fall. However,
there is increasing consensus among forecasters that U.S. net oil imports have passed their high
water mark already and may remain relatively flat in the long run after the economic recovery.
Among the largest sources of U.S. gross oil imports are Canada (2.5 Mb/d), Mexico (1.2 Mb/d),
and Venezuela (1.0 Mb/d). Imports from the last two have decreased in recent years (Figure 2).
Mexican production peaked in 2004 and has fallen by about 0.9 Mb/d since then because new

30 TransCanada Keystone Pipeline, L.P., September 19, 2008, pp. 6-8.
31 U.S. Department of State, April 16, 2010. p. 4-2.
32 All data in this section are from the U.S. Energy Information Administration’s (EIA’s) Petroleum Navigator
(http://www.eia.gov/dnav/pet/pet_move_impcus_a2_nus_ep00_im0_mbbl_m.htm) and International Energy Statistics
(http://tonto.eia.doe.gov/cfapps/ipdbproject/IEDIndex3.cfm).
33 For context, the United States consumes roughly 19 Mb/d, more than 20% of the world’s oil market.
Net imports are gross or total imports less total exports. This section will focus on gross imports, though it should be
noted that among U.S. petroleum exports about 0.2 Mb/d of petroleum products go to Canada and 0.4 Mb/d to Mexico.
34 These data are based on full year 2010 estimates provided by the EIA’s Short Term Energy Outlook (STEO),
http://www.eia.doe.gov/emeu/steo/pub/contents.html. The STEO provides a balance of U.S. supply and demand.
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projects have not been able to offset depletion at Mexico’s giant Cantarell field. Venezuelan
production never fully recovered after a strike at its national oil company, Petróleos de Venezuela,
in 2002-2003. Venezuelan production today is nearly 1 Mb/d less than that achieved in 2001. In
both countries, policies on private investment and a broad set of priorities—some of which are
non-commercial—for national oil companies have made sustaining or increasing output difficult.
In addition, Venezuela has been trying to diversify its export markets away from the United
States, for example, by increasing exports to China.35 Oil imports to the United States from the
Persian Gulf have also decreased since 2008-2009. All major Persian Gulf exporters to the United
States are members of the Organization of the Petroleum Exporting Countries (OPEC), which cut
production in 2009. Venezuela is also an OPEC member, but according to U.S. Energy
Information Administration (EIA) data, it did not join other members in voluntarily reducing
output.
Figure 2. U.S. Oil Imports, Selected Sources
Gross imports, Mb/d
2005
Last 12 Months
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Persian Gulf
Venezuela
Canada
Mexico

Source: U.S. Energy Information Administration, “Petroleum Navigator: U.S. Imports by Country of Origin,” U.S.
Department of Energy, December 12, 2010. http://www.eia.gov/dnav/pet/
pet_move_impcus_a2_nus_ep00_im0_mbblpd_m.htm.
Notes: Last 12 months of available data history runs from November 2009 to October 2010.
While Mexican and Venezuelan oil production has decreased, Canadian production has increased,
primarily due to growing production from the Alberta oil sands region. Because production from
Canada’s oil sands currently lacks the infrastructure to be exported from Canada’s west coast,
increased oil sands output is necessarily directed south into the United States through existing and
planned pipeline infrastructure, including the Keystone pipeline. Canadian production has
increased about 0.2 Mb/d since 2005, and exports to the United States increased by 0.4 Mb/d
(Figure 3).36

35 U.S. Energy Information Administration, “Country Analysis Brief: Venezuela,” February 2010,
http://www.eia.doe.gov/emeu/cabs/Venezuela/Oil.html.
36 As in the United States, Canadian consumption fell due to economic downturn. This allowed the increment in exports
to be higher than the increment in production.
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Figure 3. Total U.S. Oil Imports
Monthly imports in Mb/d on a 12 month moving average, Jan. 2000 to Oct. 2010
14
12
Other
10
8
Mexico
6
Venezuela
4
Persian Gulf
2
Canada
0
2000
2002
2004
2006
2008
2010

Source: U.S. Energy Information Administration, “Petroleum Navigator: U.S. Imports by Country of Origin,”
December 12, 2010. http://www.eia.gov/dnav/pet/pet_move_impcus_a2_nus_ep00_im0_mbblpd_m.htm.
Impact of Increased Oil Sands Crude Supply to the United States
Oil sands (also referred to as tar sands) are a mixture of clay, sand, water, and heavy black
viscous oil known as bitumen. Oil sands are processed to extract the bitumen, which can then be
upgraded into “syncrude” that is suitable for pipeline transport. Canada’s oil sands production is
expected to be exported as either a light, upgraded synthetic crude or a heavy crude oil that is a
blend of bitumen diluted with lighter hydrocarbons to ease transport. The bulk of oil sands supply
growth is expected to be in the form of the latter.37 Most oil sands imports into the United States
currently go to the Midwest, where some refineries are investing in complex refining capacity to
process growing volumes of heavy Canadian crude.38 The U.S. Gulf Coast region already has a
large amount of complex refining capacity and is considered to be potentially well suited for
processing Canadian heavy crude oil.39 Gulf Coast refiners currently process heavy crudes from
Venezuela, Mexico, and elsewhere. Complex refineries in the Gulf Cost may be best equipped to
handle a large increase of heavy oil sands crude, though they will still need to adjust processes
and make new capital investments in equipment to accommodate particular crudes’
characteristics,40 especially if the new Canadian crudes will be used in large amounts.41

37 Canadian Association of Petroleum Producers (CAPP), Crude Oil: Forecast, Markets, and Pipelines, June 2010, p.
7, http://www.capp.ca/getdoc.aspx?DocId=173003.
38 CAPP, 2010, p. 13. According to CAPP, refineries adding capacity to process heavy oil in the Midwest include those
in Roxana, IL; Whiting, IN, and Detroit, MI.
39 CAPP, 2010, p. 14.
40 Baker Hughes, Planning Ahead for Effective Canadian Crude Processing, Baker Petrolite White Paper, 2010,
http://www.bakerhughes.com/assets/media/whitepapers/4c2a3c8ffa7e1c3c7400001d/file/28271-
canadian_crudeoil_update_whitepaper_06-10.pdf.pdf&fs=1497549.
41 For a description of which units refineries may need to add (or have added) to be able to process more Canadian oil
sands supply, see Praveen Gunaseelan and Christopher Buehler, “Changing US Crude Imports Are Driving Refinery
Upgrades,” Oil and Gas Journal, August 10, 2009.
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With expanded pipeline capacity, Canadian supplies are expected to compete with other heavy
crudes such as those from Mexico, Venezuela, and elsewhere.42 It is difficult to predict precisely
how this competition will play out, but it may take place through shifting discounts or premiums
on crude oils from various sources.43 Because oil sands output can be transported only to
Canadian and U.S. refiners currently, it could be possible for Canadian oil supplies to effectively
“push out” waterborne shipments from other countries, although this depends on a wide range of
market conditions. Waterborne crudes may more easily go to other destinations than Canadian
crudes, though like Canadian crudes they can be tied to specialized refining capacity, as is true for
Venezuelan heavy crudes.
Although Canada currently lacks pipeline capacity to transport oil sands production to the Pacific
coast, there has been some interest in building such capacity. If this were to occur, Canadian
crudes could access other markets by sea, especially in Asia, and would no longer be as tied to the
United States. The commercial viability of such pipelines is unclear, but some have claimed a
western pipeline could be economic if greater U.S. shipments were not possible.44 Indeed, a study
commissioned by the Department of Energy concluded that
if pipeline projects to the BC [British Columbia] coast are built, they are likely to be utilized.
This is because of the relatively short marine distances to major northeast Asia markets,
future expected growth there in refining capacity and increasing ownership interests by
Chinese companies especially in oil sands production. Such increased capacity would alter
global crude trade patterns. Western Canadian Sedimentary Basin (WCSB) crudes would be
“lost” from the USA, going instead to Asia. There they would displace the world’s balancing
crude oils, Middle Eastern and African predominantly OPEC grades, which would in turn
move to the USA. The net effect would be substantially higher U.S. dependency on crude
oils from those sources versus scenarios where capacity to move WCSB crudes to Asia was
limited.45
Crude oil prices are generally set in a global market. Increased supply from anywhere can,
therefore, contribute to keeping oil prices lower than they would otherwise be, all other things
being equal. Accordingly, building any new pipeline can lower the cost of oil and oil products in
associated markets if (1) it enables lower transport or refining costs and (2) not building the
pipeline would reduce global supply. The latter assumes that without the pipeline, resources
would be left stranded. Some have argued that Canadian oil sands production would be the same
regardless of whether the Keystone XL pipeline is built.46 Then, the pipeline itself may not make
a significant contribution to increasing global oil supply. However, if an alternative transport
route to market—for instance, via a west coast pipeline and then tanker to Asia—raises transport
costs above an economic threshold, it could prevent certain marginal oil sands projects from
being built. The validity of these alternative scenarios, as in most debates about proposed energy
infrastructure projects, depends largely on complex assumptions about oil market structure and

42 Center for Energy Economics and Bureau of Economic Geology, Overview of the Alberta Oil Sands, University of
Texas at Austin, 2006, p. 16, http://www.beg.utexas.edu/energyecon/documents/overview_of_alberta_oil_sands.pdf.
43 For more about the U.S. refining system, see CRS Report R41478, The U.S. Oil Refining Industry: Background in
Changing Markets and Fuel Policies
, by Anthony Andrews, Robert Pirog, and Molly F. Sherlock.
44 Edward Welsch, “TransCanada: Oil Sands Exports Will Go to Asia if Blocked in U.S.,” Dow Jones Newswires, June
30, 2010.
45 EnSys Energy & Systems, Inc., Keystone XL Assessment: Final Report, Prepared for the U.S. Department of Energy,
Office of Policy & International Affairs, December 23, 2010, p. 118.
46 Welsh 2010; EnSys Energy & Systems 2010.
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economics about which fair-minded analysts may disagree. Consequently, stakeholders evaluating
the oil supply and price impacts of the proposed Keystone XL Pipeline may need to rely on their
own judgment based on the best facts available at the time.
Economic Impact of the Pipeline
In addition to supply diversity arguments, some Keystone XL pipeline proponents support the
project based on economic benefits associated with expanding U.S. pipeline infrastructure. A
recent study by the Energy Policy Research Foundation, for example, concludes that “the
Keystone expansion would provide net economic benefits from improved efficiencies in both the
transportation and processing of crude oil of $100 million-$600 million annually, in addition to an
immediate boost in construction employment.”47 A 2009 report from the Canadian Energy
Research Institute (CERI) commissioned by the American Petroleum Institute similarly concludes
that
As investment and production in oil sands ramps up in Canada, the pace of economic activity
quickens and demand for US goods and services increase rapidly, resulting in an estimated
343 thousand new US jobs between 2011 and 2015. Demand for US goods and services
continues to climb throughout the period, adding an estimated $34 billion to US GDP in
2015, $40.4 billion in 2020, and $42.2 billion in 2025.48
These CERI estimates apply to the entire oil sands industry, however, not only the Keystone XL
project, and they are derived from a proprietary economic analysis which has not been subject to
external review. Some stakeholders point to State Department and other studies reporting much
lower anticipated economic benefits.49 Consequently, it is difficult to determine what specific
economic and employment impacts may ultimately be attributable to the Keystone XL pipeline.
Nonetheless, given the physical scale of the project, it could be expected to increase employment
and investment at least during construction.
Canadian Oil Sands Environmental Impacts
Oil production from oil sands is controversial because it has significant environmental impacts,
including emissions of greenhouse gases during extraction and processing, disturbance of mined
land, and impacts on wildlife and water quality. Because bitumen in oil sands cannot be pumped
from a conventional well, it must be mined, usually using strip mining or open pit techniques, or
the oil can be extracted with underground heating methods.50 Large amounts of water and natural
gas are also required (for heating) during the extraction process.51 The magnitude of the
environmental impacts of oil sands production, in absolute terms and compared to conventional

47 Energy Policy Research Foundation, Inc., The Value of the Canadian Oil Sands (….to the United States): An
Assessment of the Keystone Proposal to Expand Oil Sands Shipments to Gulf Coast Refiners, Washington, DC,
November 29, 2010, p. 2, http://www.eprinc.org/pdf/oilsandsvalue.pdf.
48 Canadian Energy Research Institute, The Impacts of Canadian Oil Sands Development on the United States’
Economy, Final Report
, Calgary, Alberta, October 2009, p. vii.
49 National Wildlife Federation, “TransCanada Exaggerating Jobs Claims for Keystone XL,” November 9, 2010,
http://www.dirtyoilsands.org/files/Keystone_XL_Jobs_11-09-10.pdf.
50 U.S. Bureau of Land Management, “About Tar Sands,” web page, January 11, 2011, http://ostseis.anl.gov/guide/
tarsands/index.cfm.
51 Cecilia Jamasmie, “The Challenges and Potential of Canada’s Oil Sands,” Mining, September-October 2010, pp. 7-8.
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oil production, has been the subject of numerous, and sometimes conflicting, studies and policy
papers.52 Some stakeholders who object to oil sands projects oppose the Keystone XL pipeline
because it expands access to new markets for the oil produced by those projects, thereby
encouraging what they consider to be further environmentally destructive oil sands development.
As discussed earlier, however, if oil sands production can be diverted to other markets (e.g.,
Asia), preventing the Keystone XL project may not necessarily limit oil sands development.53
Possible Risks to the Ogallala Aquifer
The proposed route of the Keystone XL pipeline passes across significant portions of the Ogallala
Aquifer (Figure 4), one of the world’s largest known aquifers and the primary source of
groundwater for approximately 20% of U.S. agricultural production.54 Because the aquifer is
relatively close to the surface, some stakeholders are concerned that a release from the pipeline
could potentially contaminate the aquifer with oil, jeopardizing its use for farming and drinking
water and causing significant ecosystem damage. These concerns have been heightened in the
wake of the 2010 spill from an Enbridge oil pipeline in Marshall, MI, which released 819,000
gallons of crude into a tributary of the Kalamazoo River. Furthermore, a recent report by the
Natural Resources Defense Council (NRDC) argues that the Keystone XL pipeline could be more
likely to fail and cause environment damage than other crude oil pipelines because the bitumen
mixture it would carry is “significantly more corrosive to pipeline systems than conventional
crude,” among other reasons.55 Canadian officials and other stakeholders have rejected these
arguments, however, citing factual inaccuracies and a flawed methodology in the analysis, which
compares pipeline spill rates in Canada to those in the United States.56
In its draft EIS for the Keystone XL pipeline project, the State Department states that “there is the
possibility that a release could migrate through the overlying surface materials and enter a
groundwater system.”57 Nonetheless, the department concludes that “the probability of a large
spill occurring is very low, and, consequently, risk of environmental impacts is minimal.”58
Because the probability of a pipeline spill and subsequent groundwater contamination cannot be
known with certainty, however, debate as to the groundwater risk potentially posed by the
Keystone XL pipeline will likely continue.59


52 For an example of contrasting views, see IHS CERA Inc., Oil Sands, Greenhouse Gases, and US Oil Supply, Getting
the Numbers Right
, 2010; and Natural Resources Defense Council, “Setting the Record Straight: Lifecycle Emissions
of Tar Sands,” November 2010.
53 For more analysis of oil sands and their environmental impacts, see CRS Report RL34258, North American Oil
Sands: History of Development, Prospects for the Future
, by Marc Humphries.
54 Jane Braxton Little, “The Ogallala Aquifer: Saving a Vital U.S. Water Source,” Scientific American, March 30, 2009.
55 Anthony Swift, Susan Casey-Lefkowitz, and Elizabeth Shope, Tar Sands Pipelines Safety Risks, Natural Resources
Defense Council, February 2011, p. 6.
56 Canadian Energy Resources Conservation Board, “ERCB Addresses Statements in Natural Resources Defense
Council Pipeline Safety Report,” Press release, Calgary, Alberta, February 16, 2011.
57 U.S. Department of State, Draft Environmental Impact Statement for the Keystone XL Oil Pipeline Project,
Appendix P, “Risk Assessment,” April 16, 2010. p. 4-6.
58 Ibid. p. 6-1.
59 For more analysis of pipeline safety issues, see CRS Report R41536, Keeping America’s Pipelines Safe and Secure:
Key Issues for Congress
, by Paul W. Parfomak.
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Figure 4. Keystone XL Pipeline Route Across the Ogallala Aquifer

Source: Natural Resources Defense Council, Say No to Tar Sands Pipeline,
November, 2010, p. 3.
Fossil Fuels Dependence
Some stakeholders object to the Keystone XL pipeline because it would increase U.S. supplies of
oil, and thereby perpetuate the nation’s dependence on imported fossil fuels and increase carbon
emissions from the transportation sector.60 Acknowledging this concern, in a public forum on
October 20, 2010, Secretary of State Clinton reportedly remarked that “we’re either going to be
dependent on dirty oil from the [Persian] Gulf or dirty oil from Canada … until we can get our act
together as a country and figure out that clean, renewable energy is in both our economic interests
and the interests of our planet.”61 Critics of the State Department’s draft EIS assert that the
environmental review overlooks the pipeline project’s overall impact on greenhouse gas
emissions, for example, from the extraction and refining processes. However, others have argued
that whether the Keystone XL Pipeline is constructed would have little bearing on greenhouse gas
emissions as there are likely to be other export routes available for Canadian oil sands crude, and
therefore, the same crude oils would still be transported and refined, albeit in different
geographies (e.g., China).62

60 See, for example: Natural Resources Defense Council, Tar Sands Invasion: How Dirty and Expensive Oil from
Canada Threatens America’s New Energy Economy
, May 2010.
61 Darren Goode, “Clinton Seems Poised to Approve TransCanada Pipeline,” The Hill, October 20, 2010.
62 EnSys Energy & Systems 2010, p. 116.
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Consistency of State Department Review
In addition to the specific arguments surrounding the Keystone XL pipeline project summarized
above, the State Department faces a consistency issue in reviewing the Presidential Permit
application. As Figure 1 and Figure 4 show, the Keystone XL pipeline follows a similar route,
starting in the Alberta oil sands and crossing the Ogallala aquifer, as the earlier Keystone pipeline,
which the State Department approved. In 2009, the State Department also approved the Alberta
Clipper pipeline, designed to carry crude oil from the Alberta tar sands region to Wisconsin.
Because of its prior approvals of the Keystone and Alberta Clipper pipelines, it might be difficult
for the State Department to reach different conclusions on certain environmental issues in its
review of the Keystone XL pipeline, and reject the permit application on that basis. Doing so
could create political, and potentially legal, challenges to either its earlier environmental review,
or the current one. Some observers maintain that, in its ultimate decision whether to grant the
Keystone XL pipeline a Presidential Permit, the State Department may, to some extent, be
constrained by its recent precedents approving similar projects.

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Appendix. Presidential Permitting Authority
The executive branch has exercised permitting authority over the construction and operation of
“pipelines, conveyor belts, and similar facilities for the exportation or importation of petroleum,
petroleum products” and other products at least since the promulgation of Executive Order 11423
in 1968.63 Executive Order 13337 amended this authority and the procedures associated with the
review, but did not substantially alter the exercise of authority or the delegation to the Secretary
of State in E.O. 11423.64 However, the source of the executive branch’s permitting authority is not
entirely clear from the text of these Executive Orders. Generally, powers exercised by the
executive branch are authorized by legislation or are inherent presidential powers based in the
Constitution. E.O. 11423 makes no mention of any authority, and E.O. 13337 refers only to the
“Constitution and the Laws of the United Sates of America, including Section 301 of title 3,
United States Code.”65 3 U.S.C. Section 301 simply provides that the President is empowered to
delegate authority to the head of any department or agency of the executive branch.
The legitimacy of this permitting authority has been addressed by federal courts. In Sierra Club v.
Clinton
,66 the plaintiff Sierra Club challenged the Secretary of State’s decision to issue a
Presidential Permit authorizing the Alberta Clipper pipeline. Among the plaintiff’s claims was an
allegation that issuance of the permit was unconstitutional because the President had no authority
to issue the permits referenced in E.O. 13337 (in this case, for the importation of crude oil from
Canada via pipeline).67 The defendant responded that the authority to issue Presidential Permits
for these border-crossing facilities “does not derive from a delegation of congressional authority
... but rather from the President’s constitutional authority over foreign affairs and his authority as
Commander in Chief.”68 The U.S. District Court for the District of Minnesota agreed, noting that
the defendant’s assertion regarding the source of the President’s authority has been “well
recognized” in a series of Attorney General opinions, as well as a 2009 judicial opinion.69 The
court also noted that these permits had been issued many times before and that “Congress has not
attempted to exercise any exclusive authority over the permitting process. Congress’s inaction
suggests that Congress has accepted the authority of the President to issue cross-border
permits.”70 Based on the historical recognition of the President’s authority to issue these permits
and Congress’s implied approval through inaction, the court found the Presidential Permit
requirement for border facilities constitutional.

63 Providing for the performance of certain functions heretofore performed by the President with respect to certain
facilities constructed and maintained on the borders of the United States
, 33 Fed. Reg. 11741 (August 16, 1968).
64 Issuance of Permits With Respect to Certain Energy-Related Facilities and Land Transportation Crossings on the
International Boundaries of the United States
, 69 Fed. Reg. 25299 (May 5, 2004).
65 Ibid.
66 689 F.Supp.2d 1147 (D. Minn. 2010).
67 Ibid. at 1162.
68 Ibid.
69 Ibid. at 1163 (citing 38 U.S. Atty Gen. 162 (1935); 30 U.S. Op. Atty. Gen. 217 (1913); 24 U.S. Op. Atty. Gen. 100;
and Natural Resources Defense Council (NRDC) v. U.S. Department of State, 658 F.Supp.2d 105, 109 (D.D.C. 2009)).
The court in NRDC held that the State Department’s issuance of a presidential permit under Executive Order 13337
was not subject to judicial review under the Administrative Procedure Act for abuse of discretion because “the issuance
of presidential permits is ultimately a presidential action.” 658 F. Supp. 2d at 109, 111-12. The court said that to allow
judicial review of such decisions would raise separation of powers concerns. Ibid. at 111.
70 Ibid; see also Youngstown Sheet and Tube Co. v. Sawyer, 343 U.S. 579 (1952) (establishing a three-part test for
analyzing the validity of presidential actions in relation to constitutional and congressional authority).
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Author Contact Information

Paul W. Parfomak
Linda Luther
Specialist in Energy and Infrastructure Policy
Analyst in Environmental Policy
pparfomak@crs.loc.gov, 7-0030
lluther@crs.loc.gov, 7-6852
Neelesh Nerurkar
Vanessa K. Burrows
Specialist in Energy Policy
Legislative Attorney
nnerurkar@crs.loc.gov, 7-2873
vburrows@crs.loc.gov, 7-0831


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