What Happens in a Freedom of Information Act Lawsuit

A Freedom of Information Act lawsuit is a federal court case brought under 5 U.S.C. § 552 to make a federal agency release records it improperly withheld or never answered. The plaintiff is the person or organization that filed the FOIA request. The defendant is the agency. The judge decides, without deferring to the agency, whether each withheld record or redaction is legally justified, and the government carries the entire burden of proving that it is.¹

Who Can File

Any person or organization that submitted a FOIA request can sue. There is no requirement to explain why you want the records or what you plan to do with them, and no showing of special standing beyond having made the request. An attorney or organization that filed on someone else’s behalf can also serve as the plaintiff.

Where the Suit Goes

A FOIA plaintiff can pick from four federal district courts: the district where the requester lives, the district where the requester’s principal place of business is located, the district where the agency records are physically situated, or the U.S. District Court for the District of Columbia.² Most of these cases end up in D.C., partly because the Department of Justice runs agency FOIA litigation from Washington and the D.C. courts have seen more of it than anyone else.³ Nearly 59% of media FOIA lawsuits filed from 2001 through 2020 were brought in the District of Columbia, with the Southern District of New York and the Northern District of California a distant second and third.⁴

A few venues are off the table. The Court of Federal Claims has no jurisdiction over FOIA. The federal judiciary itself cannot be sued under FOIA because Congress and the courts are not covered by the statute, and neither are state agencies.³ States have their own public records laws with their own procedures and deadlines; FOIA itself does not reach them.

When You Can File

You generally have to exhaust administrative remedies first. That means receiving the agency’s denial and then losing an administrative appeal. Deadlines for filing that appeal vary by agency: the Department of Homeland Security gives 90 working days from the date of the response, while the Department of State gives 60 calendar days.² Skip the appeal, and your suit will usually be thrown out.⁵

The main exception is constructive denial. Agencies must respond to a FOIA request within 20 business days, with a possible 10-day extension for unusual circumstances. If the agency issues no determination in that window, you can go straight to federal court without appealing.² Courts also recognize a futility exception when an appeal would obviously accomplish nothing.⁵

Whether exhaustion is a hard jurisdictional requirement or a softer prudential one depends on the circuit. Several appeals courts now treat it as prudential, which means an agency can waive the defense by not raising it early.⁵ Once administrative remedies are exhausted, a six-year statute of limitations begins to run.⁶

How the Court Reviews the Agency

FOIA litigation runs on a standard that is unusually plaintiff-friendly for administrative law. Courts review agency withholdings de novo, so the judge decides the exemption questions independently rather than deferring to the agency’s reasoning. The burden is on the government to justify every withheld record and every redaction.¹

Since the FOIA Improvement Act of 2016, agencies also have to satisfy a “foreseeable harm” standard. It is not enough to show that an exemption technically applies; the agency must “reasonably foresee that disclosure would harm an interest protected by” that exemption.⁷ The D.C. Circuit has read this to mean agencies must articulate both the nature of the harm and how it connects to the specific information being withheld. Generalized concerns about chilling deliberations do not pass.⁸

The Vaughn Index

The main mechanism a court uses to test an agency’s withholdings is the Vaughn index, named after the 1973 D.C. Circuit decision in Vaughn v. Rosen. The agency has to produce a detailed inventory identifying each document, stating which FOIA exemption it invokes, and explaining how disclosure would harm the interest that exemption protects. Vague or conclusory descriptions get rejected. When a case involves thousands of pages, courts may allow representative sampling or categorical indexing instead of a page-by-page treatment.⁹ Requesters cannot demand a Vaughn index during the administrative process; it exists only in litigation.¹⁰

In Camera Review

If the Vaughn index or agency affidavits are not convincing, the judge can inspect the withheld records personally. In camera review is considered an extraordinary remedy. Courts are more likely to order it when the agency’s descriptions are too vague, its submissions are contradictory, or there is evidence of bad faith. When agency filings are reasonably detailed and unrebutted, courts generally accept them.¹¹

Segregability

Even when part of a document is properly exempt, agencies must release any reasonably segregable non-exempt portions. The agency has to show it conducted a line-by-line review and that nothing further can be separated out. Failing to address segregability can be grounds for the court to order additional disclosure.⁹

The Exemptions the Agency Will Rely On

FOIA has nine exemptions, and a handful drive most litigation. Exemption 1 covers properly classified national security information. Exemption 5 shields privileged internal communications, including the deliberative process privilege, attorney-client privilege, and attorney work product. Exemption 6 protects personal privacy in personnel and medical files. Exemption 7, which has six sub-parts, covers law enforcement records and is invoked to prevent interference with investigations, protect confidential sources, and shield investigative techniques.¹²

Two changes worth knowing. The 2016 FOIA Improvement Act put a 25-year sunset on the deliberative process privilege, so agencies cannot invoke Exemption 5 for documents created more than 25 years before the request.⁷ And the Supreme Court’s 2019 decision in Food Marketing Institute v. Argus Leader Media reshaped Exemption 4, discarding the longstanding “substantial competitive harm” test in favor of a simpler standard: information is confidential if the submitter customarily treats it as private and provided it to the government under an assurance of privacy.¹³

On the deliberative process side, the Court reinforced agency protection in U.S. Fish and Wildlife Service v. Sierra Club (2021), holding that draft biological opinions never approved by agency decisionmakers remained predecisional and exempt, even where those drafts prompted another agency to change course. A document is not “final” simply because nothing else followed it.¹⁴

What a Winning Plaintiff Gets

The direct remedy is an order compelling the agency to produce the records or to produce them with fewer redactions. Beyond that, FOIA allows courts to award reasonable attorney fees and litigation costs to a plaintiff who has “substantially prevailed.” Recovering fees means clearing two hurdles: eligibility and entitlement.¹⁵

To be eligible, the plaintiff must show the lawsuit produced results, either through a court order or because the litigation prompted the agency to voluntarily release records it had refused. The OPEN Government Act of 2007 explicitly preserved this “catalyst” theory after the Supreme Court narrowed it in other fee-shifting contexts.¹⁶ Attorneys who represent themselves are generally not eligible for fees, though organizations litigating on their own behalf can still recover them.¹⁷

Even an eligible plaintiff has to prove entitlement under a four-factor test. Courts weigh whether the disclosure serves the public interest, whether the requester has a commercial motivation, what kind of interest the requester holds in the records, and whether the agency had a reasonable legal basis for withholding. Awards are calculated by the “lodestar” method, multiplying reasonable hours by a reasonable hourly rate, and courts routinely cut requests for duplicative or unproductive work.¹⁵ In practice, fee questions are often folded into settlement talks, and some attorneys drop fee petitions as a bargaining chip.¹⁶

Suing Over Systemic Delay

Not every FOIA case fights over specific redactions. Many are filed against agencies that simply never respond. Federal agencies received over 1.7 million FOIA requests in fiscal year 2025, staffing fell 14% to 4,823 full-time employees, and the government-wide backlog swelled 28% to almost 340,000 pending requests.¹⁸

Some plaintiffs go further and bring “policy or practice” claims arguing that an agency’s chronic failure to meet statutory deadlines is itself unlawful. If the court agrees, it can order systemic reforms that cover every FOIA request the agency receives, not just the one that triggered the suit.¹⁹ In Nightingale v. USCIS, filed in the Northern District of California in 2019, a federal judge ordered U.S. Citizenship and Immigration Services and ICE to adhere to the 30-day statutory deadline and clear their backlogs of immigration file requests within 60 days. USCIS reduced its backlog by approximately 97% in the months that followed, spending $1.26 million in overtime and over $4 million in emergency funding on the effort. By late 2022 the backlog had climbed back above 5,300 requests, and the agency remains subject to quarterly compliance reporting.²⁰

Reverse FOIA: A Different Kind of Suit

One category of “FOIA lawsuit” moves in the opposite direction. In a reverse FOIA action, a company or individual that gave information to an agency sues to stop the agency from releasing it, usually after a competitor filed a request for the material. The Supreme Court held in Chrysler Corp. v. Brown (1979) that FOIA itself gives submitters no cause of action to block disclosure. The remedy lies under the Administrative Procedure Act, where the submitter argues that release would violate the Trade Secrets Act or would be arbitrary and capricious.²¹ The submitter bears the burden, and the court reviews the agency’s decision under the deferential “arbitrary and capricious” standard rather than the de novo review that applies in ordinary FOIA suits.²²

State Records Are a Separate Track

Federal FOIA reaches only executive branch agencies of the federal government. Every state has its own public records law, under various names: California’s Public Records Act, New York’s Freedom of Information Law, Texas’s Public Information Act, Pennsylvania’s Right-to-Know Law, and others.²³ These statutes share FOIA’s basic shape but differ in significant ways. Some restrict requests to residents or citizens, a practice the Supreme Court upheld in McBurney v. Young (2013).²⁴ Response deadlines vary widely, from California’s 10 days to Missouri’s requirement of an answer by the end of the third business day. Some states route disputes through administrative bodies such as Connecticut’s Freedom of Information Commission or Illinois’s Attorney General’s Public Access Counselor rather than sending requesters straight to court. If the records you want are held by a state or local agency, a federal FOIA lawsuit is not the path.

1
Access Reports. Court Procedures Under FOIA
2
American Immigration Council. A Step-by-Step Guide to Filing a FOIA Lawsuit Toolkit
3
U.S. Department of Justice. Court Decisions – Jurisdiction
4
FOIA Project. FOIA Litigators
5
U.S. Department of Justice. Court Decisions – Exhaustion
6
National Security Archive. FOIA Guide – Chapter 6
7
U.S. Department of Justice. OIP Summary of FOIA Improvement Act
8
U.S. Department of Justice. OIP Guidance – Applying Presumption of Openness and Foreseeable Harm Standard
9
U.S. Department of Justice. Court Decisions – Vaughn Index
10
FOIA Wiki. Vaughn Indices
11
U.S. Department of Justice. Court Decisions – In Camera Review
12
FOIA.gov. Frequently Asked Questions
13
U.S. Department of Justice. Exemption 4 After the Supreme Court’s Ruling in Food Marketing Institute v. Argus Leader Media
14
U.S. Department of Justice. Supreme Court’s Exemption 5 Ruling in U.S. Fish and Wildlife Service v. Sierra Club
15
U.S. Department of Justice. Court Decisions – Attorney Fees
16
FOIA Project. Attorney Fee Awards in FOIA Litigation
17
U.S. Department of Justice. Attorney Fees Guide
18
FOIA Advisor. Monthly Roundup
19
Yale Law School. MFIA Litigation Aims to Fix State Department’s FOIA Delays
20
American Immigration Council. Lawsuit Challenges Systemic USCIS and ICE FOIA Delays
21
U.S. Department of Justice. Reverse FOIA
22
Administrative Conference of the United States. Protecting Business Secrets Under FOIA Exemption 4
23
CivicPlus. FOIA Request vs. Records Request
24
Morgan Lewis. State and Federal Public Records Laws