Dispatch · Explainer

Section 702 Backdoor Searches: How the FBI Queries Americans' Communications

Section 702 targets foreigners abroad. The data it collects also holds Americans' messages, and the FBI can search it for them without a warrant.

A “backdoor search” is a search of data already collected under Section 702 of the Foreign Intelligence Surveillance Act using a term tied to an American, such as a name, email address or phone number. The collection itself targets foreigners abroad without an individual court order. The search of Americans' messages inside that data does not require a warrant under the statute. Section 702's statutory authority lapsed on June 12, 2026, but collection continues under FISA Court certifications that run to March 17, 2027, per the Brennan Center.

Key takeaways

  • Section 702 (50 U.S.C. § 1881a) authorizes collection targeting non-U.S. persons reasonably believed to be abroad, without an individual court order. Americans' communications with those targets are swept in.
  • Collection and querying are separate acts. The query is where an American's name meets the database.
  • The FISA Court found the FBI's querying procedures inconsistent with the Fourth Amendment in an opinion dated Oct. 18, 2018, and described 278,000+ non-compliant FBI queries in an opinion dated Apr. 21, 2022.
  • The 2024 reauthorization added approval, documentation and audit rules for FBI queries. It did not add a warrant requirement.
  • Nothing in the public record shows that any case we track began with a Section 702 query.

01What Section 702 authorizes

Congress enacted Section 702 in 2008. Codified at 50 U.S.C. § 1881a, it lets the government collect communications by targeting people who are not U.S. persons and are reasonably believed to be outside the United States. A U.S. person is, roughly, a citizen or lawful permanent resident. No judge approves individual targets. Instead, the FISA Court, the secret federal court that oversees foreign-intelligence surveillance, approves annual certifications and the procedures agencies must follow.

The Brennan Center describes the result plainly: the law permits the NSA to acquire the communications of almost any foreigner abroad without an individualized court order, and in doing so it inevitably sweeps in large amounts of Americans' calls, texts and emails. That sweep is called incidental collection. The American was not the target. Their side of the conversation was collected anyway.

02Collection vs. querying: what a backdoor search is

Collection is the act of gathering the communications. Querying is searching the stored results. A U.S. person query is a search using a term associated with an American. Critics call it a backdoor search because it reaches Americans' communications through a program that was never allowed to target them, and without the warrant a direct search would need.

Courts have started to treat the two acts separately. Elizabeth Goitein and Hannah James of the Brennan Center, writing in Just Security on Mar. 31, 2026, note that a federal appeals court held in 2019 that U.S. person queries are separate Fourth Amendment events. The Electronic Frontier Foundation cites a January 2025 federal court ruling that backdoor searches ordinarily require a warrant.

The case for a warrant

  • The query is aimed at a known American.
  • Section 702 may not be used to target Americans.
  • The FISA Court has documented repeated improper queries.

What the 2024 law chose instead

  • Supervisor or attorney approval before a U.S. person query.
  • A written factual basis and a record of each query.
  • Justice Department audits, but no warrant.

03What the FISA Court found

  1. Oct. 18, 2018 · released Oct. 8, 2019

    Querying procedures fail the Fourth Amendment

    A FISA Court opinion found the FBI's procedures for querying Section 702 data were not consistent with the Fourth Amendment, citing repeated improper queries.

  2. Apr. 21, 2022 · released May 19, 2023

    278,000+ non-compliant queries

    A later opinion described more than 278,000 non-compliant FBI queries of FISA-acquired data, including searches on Jan. 6 suspects, people arrested at 2020 protests, and more than 19,000 donors to a congressional campaign.

Non-compliant means the queries broke the FBI's own court-approved rules. It does not mean each search led to a case.

04The numbers, and their limits

The Office of the Director of National Intelligence publishes an Annual Statistical Transparency Report that estimates FBI U.S. person queries. The figures below are as reported by Goitein and James, who cite each source.

Calendar yearFBI U.S. person queriesSource as cited
2021Up to 3.4 million, across systems that included 702 dataODNI transparency report released 2022
2022Around 200,000ODNI report for calendar 2022
202357,094ODNI report for calendar 2023
20245,518ODNI report released April 2025
20257,413A Justice Department official's letter, reported by The Record (not an ODNI report)

ODNI's own release on its 13th annual report, covering 2025, says the FBI figure increased slightly from the prior period but remained lower than previous years.

What the numbers don't show

Goitein and James argue the drop is less than it looks. Since the 2023 figures, the FBI reports an approximate count of U.S. persons searched rather than total searches. An FBI “advanced filter function” let personnel search using terms tied to Americans without counting those searches as queries; it was not disabled until early 2025. And each year's count runs from December to November. We cannot say how many searches went uncounted, and neither can the public record.

05What the reauthorization changed

The Reforming Intelligence and Securing America Act, Pub. L. 118-49, was enacted Apr. 20, 2024 and reauthorized Section 702 for two years, per the Brennan Center. Its query rules include:

  • Prior approval from a supervisor or an authorized attorney before an FBI U.S. person query, with an exception for threats to life or serious bodily harm.
  • Deputy Director approval for queries tied to certain elected officials, appointees, political candidates or organizations, and certain media organizations; attorney approval for religious organizations and batch queries.
  • A written factual basis for each U.S. person query, and a record of it.
  • A ban on queries designed solely to find evidence of a crime, with exceptions for threats to life and for litigation or discovery obligations.
  • Justice Department audits of FBI U.S. person queries within 180 days.

What it did not include was a warrant requirement. EFF and the Brennan Center both treat that as the central unfinished reform.

06The lapse, and the deadline that still matters

Congress postponed the expiration more than once in spring 2026, according to EFF, then let Section 702's statutory authority lapse on June 12, 2026.

Surveillance did not stop. A Brennan Center brief dated Sept. 22, 2026 explains that the FISA Court approved the current certifications on Mar. 17, 2026, and that they remain valid until Mar. 17, 2027 even though the statute has expired. It describes a review process of roughly 60 days, which would put any new submission around mid-January 2027. That is why the querying fight is expected to return before spring. The Brennan Center supports a warrant requirement for U.S. person queries.

07Why backdoor searches matter for hidden case origins

A query result can become a lead. A lead can become a tip, an informant tasking or surveillance that begins on the right day. If the government later uses evidence “obtained or derived from” FISA surveillance against a defendant, 50 U.S.C. § 1806(c) requires notice. How far “derived from” reaches is the disputed part, and we cover it in our guide to FISA notice.

What the record doesn't show

Nothing in the public record shows that any case on our case files began with a Section 702 query. The FBI affidavits in Case Files 002 and 003 do not mention FISA or Section 702. That absence is not evidence either way. It is why notice filings are what we watch.

Questions a defendant can raise with their own lawyer:

  1. Has the government said whether it will give notice under 50 U.S.C. § 1806(c)?
  2. Is there any sign of national security involvement before the first documented step?
  3. Has the government sought protective orders under the Classified Information Procedures Act?

08FAQ

What is a Section 702 backdoor search?

It is a search of communications already collected under Section 702 using a term associated with a U.S. person, such as a name, email address or phone number. Critics call it a backdoor search because Section 702 may not target Americans, yet these queries reach Americans' communications without a warrant.

Does the FBI need a warrant to search Section 702 data for an American?

Not under the statute as reauthorized in 2024. That law required supervisor or attorney approval, a written basis and audits for FBI U.S. person queries, but no warrant. EFF cites a January 2025 federal court ruling that backdoor searches ordinarily require a warrant, and advocates continue to push for one in law.

Did Section 702 surveillance stop when the law lapsed?

No. Section 702's statutory authority lapsed on June 12, 2026, but according to the Brennan Center the FISA Court certifications approved on March 17, 2026 remain valid until March 17, 2027, and surveillance continues under them.

How many U.S. person queries does the FBI run?

ODNI's transparency report put the estimate at 57,094 for calendar 2023 and 5,518 for calendar 2024, as cited by the Brennan Center's Elizabeth Goitein and Hannah James. They argue the figures undercount because of a changed counting method and an uncounted FBI search tool.

Can a defendant find out if Section 702 data was used against them?

Only in part. The government must give notice under 50 U.S.C. § 1806(c) when it intends to use information obtained or derived from FISA surveillance against a defendant. Whether a query that only produced a lead triggers that notice is disputed.

Case tips

If a filing in a case you follow mentions FISA, send it to us.

A FISA notice, a CIPA motion or a sealed filing about how an investigation began is exactly what we track. Send the court and docket number. If you are facing charges, talk to your own lawyer before sharing anything about your case with anyone, including us. Messages to us are not privileged.

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09Sources

Every fact in this dispatch comes from the documents below. If you spot an error, tell us and we'll correct it on this page.

  1. 50 U.S.C. § 1881a, Section 702, Cornell LII
  2. 50 U.S.C. § 1806, use of FISA information, Cornell LII
  3. FISA Court opinion on Section 702 certifications, Oct. 18, 2018 (released Oct. 8, 2019)
  4. FISA Court opinion on Section 702 certifications, Apr. 21, 2022 (released May 19, 2023)
  5. Reforming Intelligence and Securing America Act, Pub. L. 118-49, Apr. 20, 2024 (GovInfo)
  6. Elizabeth Goitein and Hannah James, “The Truth Behind Section 702 Query Statistics,” Just Security, Mar. 31, 2026
  7. ODNI, “ODNI Releases 13th Annual Intelligence Community Transparency Report”, 2026
  8. EFF, “Victory! 702 has Expired!”, June 12, 2026
  9. Brennan Center, Section 702 March 2027 deadline brief, Sept. 22, 2026
  10. Brennan Center, Section 702 resource page

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Public education, not legal advice. We are not attorneys. If you are facing charges, talk to your lawyer before sharing anything about your case with anyone, including us.