
 
 
March 10, 2020
Foreign Intelligence Surveillance Act (FISA): An Overview
Introduction 
Patriot Act. In 2015, Congress enacted the USA 
Congress enacted the Foreign Intelligence Surveillance Act 
FREEDOM Act, which circumscribed the government’s 
(FISA) in 1978. FISA provides a statutory framework for 
ability to obtain telephone records as part of its foreign 
government agencies to obtain authorization to gather 
intelligence gathering operations. 
foreign intelligence by means of (1) electronic surveillance, 
(2) physical searches, (3) pen registers and trap and trace 
Other major changes to FISA include the FISA 
devices (which record or decode dialing, routing, 
Amendments Act of 2008 (FAA), codified as Title VII of 
addressing, or signaling information), or (4) the production 
FISA. These amendments established procedures governing 
of business records and other tangible things. Agencies 
the targeting—for intelligence-gathering purposes—of non-
typically request authorization for such activities from the 
United States persons located abroad. They also established 
Foreign Intelligence Surveillance Court (FISC), a 
statutory and procedural protections regarding surveillance 
specialized court created by FISA to act as a neutral arbiter 
of U.S. persons located outside the United States. Congress 
of agency requests for FISA orders. 
last reauthorized Title VII of FISA in early 2018. Title VII 
will be up for reauthorization in 2023. 
FISA’s History 
Following revelations regarding widespread privacy 
“Traditional” FISA 
violations by the federal government during the Watergate 
FISA Sections 1804, 1805, 1823, and 1824, otherwise 
era, Congress enacted FISA to establish guidelines for 
known as the “traditional” FISA provisions, provide a 
government collection of foreign intelligence. FISA defines 
framework by which government agencies must seek a 
“[f]oreign intelligence information” as information relating 
FISA order to engage in surveillance or conduct physical 
to a foreign power or that generally concerns the ability of 
searches for purposes of collecting foreign intelligence. 
the United States to protect against international terrorism 
Under FISA, federal officials seeking an order from the 
or a potential attack by a foreign power or agent of a 
FISC must first obtain approval from the Attorney General, 
foreign power. Though Congress initially limited FISA to 
Acting Attorney General, Deputy Attorney General, or if 
regulating government use of electronic surveillance, 
designated, the Assistant Attorney General for National 
Congress subsequently amended FISA to regulate other 
Security. They must then submit an application to the FISC. 
intelligence-gathering practices, such as physical searches, 
the use of pen registers and trap and trace devices, and 
FISC applications must include the following: (1) the 
compelling the production of certain types of business 
applicant’s identity if known; (2) information regarding the 
records. 
target’s identity; (3) why the target may be searched or 
surveilled; (4) a statement establishing a sufficient 
Shortly after the 9/11 terrorist attacks, Congress enacted the 
relationship between the target and the search location; (5) 
USA PATRIOT Act (Patriot Act) to “provid[e] enhanced 
a description of what will be searched or surveilled; (6) a 
investigative tools” to “assist in the prevention of future 
description of the nature of the information sought or of the 
terrorist activities and the preliminary acts and crimes 
foreign intelligence sought; (7) proposed minimization 
which further such activities.” Section 215 of the Patriot 
procedures; (8) a discussion of how the search or 
Act amended FISA to enlarge the scope of FISA’s business 
surveillance will be carried out; and (9) a discussion of 
records provision. Section 206 of the act authorized the 
prior applications. If electronic surveillance is sought, 
government to seek “roving” wiretaps. And in 2004, 
applications must also discuss the duration of the 
Congress amended FISA to simplify the evidentiary 
surveillance. 
showing necessary to obtain a FISA order to investigate 
non-U.S. persons suspected of engaging in international 
FISC applications must be accompanied by written 
terrorism. All three provisions are temporary and have been 
certifications from specified executive branch officials 
reauthorized several times. Most recently, in late 2019, 
regarding the nature, purpose, and significance of the 
Congress extended all three provisions through March 15, 
information to be sought. For the FISC to issue a FISA 
2020. Congress currently is considering whether to 
order, the government must show probable cause that the 
reauthorize these provisions again. If they are allowed to 
target of the surveillance is a foreign power or an agent of a 
expire, grandfather clauses permit them to remain effective 
foreign power, and that the target is using, or is about to 
with respect to investigations that began, or potential 
use, the facilities or places at which the search or 
offenses that took place, before the expiration date. 
surveillance is directed. 
In the summer of 2013, news reports revealed that the 
Section 206 
National Security Agency (NSA) was engaged in the bulk 
Section 206 of the Patriot Act amended FISA to permit 
collection of telephone metadata under Section 215 of the 
multipoint, or “roving,” wiretaps by adding flexibility to the 
https://crsreports.congress.gov 
Foreign Intelligence Surveillance Act (FISA): An Overview 
degree of specificity with which an applicant for a FISA 
Section 6001(a) of the Intelligence Reform and 
order must identify the location or facility subject to 
Terrorism Prevention Act (IRTPA) 
electronic surveillance. Specifically, if the surveillance 
In 2004, Congress amended FISA as part of the Intelligence 
target is taking actions that “may have the effect of 
Reform and Terrorism Prevention Act (IRTPA) to change 
thwarting” surveillance (such as using disposable cell 
the rules regarding the types of individuals who may be 
phone numbers or email addresses), the government may 
targets of FISA-authorized searches. Also known as the 
use a single FISA order to conduct surveillance on new 
“lone wolf” provision, Section 6001(a) of the IRTPA 
phone numbers or email addresses used by the target 
permits surveillance of non-U.S. persons who are shown to 
without needing to apply to the FISC for a new order. 
be engaged in international terrorism, but without requiring 
However, the FISC must be notified within 10 days of the 
evidence linking those persons to an identifiable foreign 
surveillance being directed at such new facilities. 
power or terrorist organization. 
Section 215 
FISA Amendments of 2008 
Section 215 of the Patriot Act enlarged the scope of 
Title VII of FISA, added by the FAA, establishes additional 
materials that the government can seek under FISA to 
procedures to acquire foreign intelligence information 
include “any tangible thing.” Section 215 also eased the 
regarding persons who are believed to be outside of the 
standard that an applicant must meet to obtain a FISA order 
United States. These provisions affect both U.S. persons as 
compelling the production of “tangible thing[s].” Thus, an 
well as non-U.S. persons, and are scheduled to sunset in 
applicant for a FISA order must now provide “a statement 
2023. 
of facts showing that there are reasonable grounds to 
believe that the tangible things sought are relevant to” a 
The FAA added Section 702 of FISA, which establishes 
foreign intelligence, international terrorism, or espionage 
procedures to collect foreign intelligence when 
investigation. 
communications travel through the United States’ 
communications infrastructure. Under Section 702, the 
Following the 2013 disclosure that the NSA had relied on 
government may compel the assistance of electronic 
Section 215 to engage in the bulk collection of telephone 
communications service providers for a period of up to one 
metadata, Congress amended Section 215 in the USA 
year in targeting non-U.S. persons reasonably believed to 
FREEDOM Act to require the use of a “specific selection 
be located outside the United States. The Attorney General 
term” (SST) to “limit collection to the greatest extent 
(AG) and the Director of National Intelligence (DNI) must 
reasonably practicable.” An SST was defined as “a term 
jointly certify that they authorize any such targeting, and 
that specifically identifies a person, account, address, or 
the FISC must approve any program under Section 702 
personal device, or any other specific identifier.” These 
before its implementation. If time does not permit 
amendments also prohibited the government from targeting 
submitting the requisite certification to the FISC before 
Section 215 orders at broad geographic regions (such as a 
authorization, the AG and DNI must submit their 
state or zip code) or at communications service providers 
certification to the FISC within seven days of the 
(such as Verizon or AT&T). 
commencement of the surveillance. 
Amended Section 215 established a slightly relaxed 
The FAA also added Sections 703 and 704 of FISA, which 
standard for obtaining telephone metadata on an ongoing 
regulate other aspects of foreign intelligence collection. 
basis in international terrorism investigations. Whereas a 
Section 703 grants jurisdiction to the FISC to “review an 
standard order under Section 215 would compel the 
application and to enter an order approving the targeting of 
production of only those records that are responsive to an 
a United States person reasonably believed to be located 
approved SST, an order seeking telephone records for an 
outside the United States to acquire foreign intelligence 
international terrorism investigation can also be used to 
information.” Section 704 mandates that, subject to certain 
produce a second set of telephone records that are 
exceptions, the government must obtain a FISA order to 
connected to one of the records that was directly produced 
target a U.S. person located abroad when the government 
by the SST. For example, if Alice called Bob, and Bob also 
also would have had to obtain a warrant to conduct 
called Charles, then a single Section 215 order that used 
domestic surveillance of that person. 
Alice’s phone number as an SST could obtain records of 
both Alice’s call to Bob and Bob’s call to Charles. In order 
Joshua T. Lobert, Legislative Attorney   
to employ this process, the government must first 
IF11451
demonstrate to the FISC that there is a “reasonable 
articulable suspicion” that the SST is associated with a 
foreign power, or an agent of a foreign power, who is 
engaged in international terrorism. 
 
 
https://crsreports.congress.gov 
Foreign Intelligence Surveillance Act (FISA): An Overview 
 
 
Disclaimer 
This document was prepared by the Congressional Research Service (CRS). CRS serves as nonpartisan shared staff to 
congressional committees and Members of Congress. It operates solely at the behest of and under the direction of Congress. 
Information in a CRS Report should not be relied upon for purposes other than public understanding of information that has 
been provided by CRS to Members of Congress in connection with CRS’s institutional role. CRS Reports, as a work of the 
United States Government, are not subject to copyright protection in the United States. Any CRS Report may be 
reproduced and distributed in its entirety without permission from CRS. However, as a CRS Report may include 
copyrighted images or material from a third party, you may need to obtain the permission of the copyright holder if you 
wish to copy or otherwise use copyrighted material. 
 
https://crsreports.congress.gov | IF11451 · VERSION 1 · NEW