Use of Force Considerations in Iraq

Use of Force Considerations in Iraq

CRS Insights
Use of Force Considerations in Iraq
Matthew C. Weed, Analyst in Foreign Policy Legislation (mweed@crs.loc.gov, 7-4589)
July 15, 2014 (IN10106)
Armed forces of the Islamic State of Iraq and the Levant (ISIL, also known as ISIS or the "Islamic
State"), already playing a major role in Syria's civil conflict, in June 2014 took control of significant
territory and several cities in northwest Iraq, and have advanced close to Baghdad. These
developments and emerging U.S. responses have raised concerns over Obama Administration policy
and authority for any new use of U.S. military force in Iraq.
U.S. Response to ISIL Threat
President Obama has deployed up to 775 U.S. troops to provide security for the U.S. embassy in
Baghdad, among other facilities, and to advise Iraq's military. President Obama stated in June that he
might also order the U.S. military to use force in Iraq against ISIL, in the form of "targeted and precise
military action," not to include engagement of U.S. ground forces. The President averred that such
action would protect U.S. national security interests to maintain regional stability and prevent ISIL, a
U.S.-designated Foreign Terrorist Organization (FTO), from establishing a safe haven in Iraq.
Possible Authorities for Use of Force in Iraq
Observers have questioned what authority the President could rely on if he decided to use military
force against ISIL in Iraq. The President has not stated what specific authority he would utilize to
conduct military operations in Iraq. Three primary sources of authority have been discussed:
2002 Authorization for Use of Military Force Against Iraq (AUMF-I)
Congress enacted the AUMF-I prior to the 2003 U.S. invasion of Iraq that toppled the government of
Saddam Hussein, with U.S. military deployments to and operations in Iraq continuing until December
2011. The AUMF-I authorizes the President to use U.S. armed forces to enforce relevant United Nations
Security Council resolutions and to "defend the national security of the United States against the
continuing threat posed by Iraq.... " Although the AUMF-I has no sunset provision and Congress has
not repealed it, one view is that after the establishment of a new Iraqi government, the restoration of
full Iraqi sovereignty, and the U.S. withdrawal from Iraq, the AUMF-I no longer has force. Obama
Administration officials have recently voiced support for repealing the AUMF-I, reflecting the
Administration's belief that it is no longer needed. Conversely, another view asserts that, although its
preamble focuses on the Saddam Hussein regime and its WMD programs, the AUMF-I's authorization
language is broad, referring only to a "continuing threat" from Iraq. Thus the ISIL threat in Iraq could
be seen as breathing new life into AUMF-I authority. In addition, former supporters of Saddam Hussein
reportedly provide support to ISIL, possibly forming a link between the original aims of the AUMF-I and
any future actions taken against ISIL.
2001 Authorization for Use of Military Force (AUMF)
In response to the 9/11 terrorist attacks, Congress enacted the AUMF authorizing the President to use
military force against "those nations, organizations, or persons he determines planned, authorized,
committed, or aided the terrorist attacks that occurred on September 11, 2001, or harbored such
organizations or persons.... " Although ISIL does not fall within that language, the executive branch
has stated that in some circumstances "associated forces" that are fighting alongside Al Qaeda and the
Taliban can also be targeted under the AUMF. The Obama Administration has stated that it will use
force against such associated forces under the AUMF only when they are lawful military targets that
"pose a continuing, imminent threat to U.S. persons.... " Due to Al Qaeda's February 2014 disavowal of
any remaining ties with ISIL, some question whether ISIL can be considered an associated force under

the AUMF. It is not clear whether the Administration considers this public split to be a factor in
identifying ISIL as an associated force, or whether U.S. intelligence corroborates the Al Qaeda-ISIL
split.
Presidential Article II Powers
Article II of the Constitution makes the President Commander in Chief of the U.S. armed forces, and
gives the President certain foreign affairs powers. It is often debated to what extent Article II
authorizes the President to use military force unilaterally, especially given Congress's Article I war
powers authorities, including the power to declare war. The President's authority to use force to defend
the United States, its personnel, and citizens against ongoing or imminent attack has been generally
accepted, while employing such force simply to further foreign policy or general national security goals
is more controversial. In Iraq, the President would seem to have substantial authority to use force to
defend U.S. personnel, the U.S. embassy in Baghdad, and any other U.S. facilities and property. If ISIL
is found to be planning attacks against the United States, or other U.S. diplomatic posts, personnel, or
property outside Iraq, the President might justify the use of force against ISIL by claiming such attacks
are imminent.
Relevant Proposed Legislation
Several Members of Congress have expressed concern over the President's deployments and have
questioned the President's authority to use military force against ISIL in Iraq. Several Members have
written to the President stating that Congress should be informed of any decisions to use military force
in Iraq and that congressional authorization of such new military action is constitutionally required. A
concurrent resolution introduced recently seeks to require withdrawal of U.S. armed forces within 30
days of passage, pursuant to the War Powers Resolution. Two amendments proposed to the House
FY2015 Department of Defense appropriations bill would have prohibited the use of appropriated funds
pursuant to the authority in the AUMF-I, and the engagement in ground combat operations in Iraq in
general. These amendments were not adopted, but an amendment prohibiting the use of funds in
contravention of the War Powers Resolution, including its requirements for presidential consultation
with Congress prior to and congressional notification of any introduction of combat-equipped troops
into hostilities in Iraq, was included in the bill before House passage. A bill introduced in the House
would prohibit use of DOD funds for supporting any U.S. combat operations "in or around Iraq," as well
as military training or advising of Iraqi forces.