Mandamus lawsuit for a delayed USCIS case

• The receipt notice (Form I-797C) and the receipt number.
• The date USCIS received the case and every USCIS notice since: biometrics, interview, request for evidence.
• Dated screenshots of the case status and of the USCIS processing time for your form and office.
• Service request numbers, the date of each inquiry and USCIS's replies; any Ombudsman request (DHS Form 7001) and the reply.
• A copy of the application and the evidence you filed.
• Proof of what the delay costs you: a work permit or status that is running out, a job offer, family separation, a deadline.
• Passport, I-94, status documents and your A-number if you have one.

• The decision may be a denial: a lawsuit asks for a decision, not an approval, and USCIS may also ask for more evidence before it decides.
• The court may find the delay is not unreasonable: it weighs the six TRAC factors, there is no fixed number of months, and courts have dismissed delay claims on that ground.
• The government may argue that the law leaves the timing or the decision to the agency's discretion and that the court cannot review it (see 8 U.S.C. 1252(a)(2)(B)(ii)).
• Filing too early: a case that is still within normal processing time, or that waits on your own answer to USCIS, makes a weaker claim.
• Cost: $405 in court fees plus service, attorney fees and time, with no promised result.
• A lawsuit does not give or extend immigration status or a work permit.
• A request to the CIS Ombudsman does not pause the time to answer a request for evidence or other notice.

• A case that is still within the posted processing time: check the USCIS processing-times tool and your case inquiry date first.
• A case waiting for a visa number because the priority date is not current: it waits for the Visa Bulletin, not for a USCIS decision.
• A denial you want to overturn: mandamus can make an agency decide but not approve; a denial needs an appeal, a motion or another challenge.
• Someone held by ICE: see ICE detention and habeas.
• A refused or delayed visa application at a U.S. consulate: a different agency and different steps apply.

Who this is for

• Applicants whose USCIS application or petition has been pending far beyond the posted processing time.
• People who sent a service request, and an Ombudsman request if it applied, and still have no decision.
• Families for whom the delay affects work, travel or a spouse's or child's status.
• People whose case shows no new request from USCIS but has not moved.

Key requirements

• Mandamus: district courts have original jurisdiction of any action in the nature of mandamus to compel an officer, employee or agency of the United States to perform a duty owed to the plaintiff (28 U.S.C. 1361).
• APA: an agency must conclude a matter presented to it within a reasonable time (5 U.S.C. 555(b)), and a reviewing court shall compel agency action unlawfully withheld or unreasonably delayed (5 U.S.C. 706(1)).
• Courts review unreasonable-delay claims about immigration cases under the same standard whether they are brought under the APA or the Mandamus Act (Lee v. Blinken, D.D.C. 2024).
• Two questions come first. Did the agency fail to take a discrete action that the law requires? And is the delay serious enough to justify an order?
• Courts answer the second question with the six TRAC factors (Telecommunications Research & Action Center v. FCC, 750 F.2d 70, 80 (D.C. Cir. 1984)): a rule of reason for timing; any timetable Congress set; health and welfare at stake; the effect of an order on competing agency priorities; the interests harmed by delay; and no need to find bad faith.
• The remedy is an order to act. It asks the agency for a decision, not for a particular result.
• Venue: a suit against a federal agency or official may be filed in a district where a defendant resides, where a substantial part of the events occurred, or where the plaintiff resides if no real property is involved (28 U.S.C. 1391(e)(1)).
• Service: the plaintiff serves the U.S. Attorney for the district, the Attorney General and the agency (Fed. R. Civ. P. 4(i)). The government answers within 60 days after service on the U.S. Attorney (Fed. R. Civ. P. 12(a)(2)).
• The fee to file is $405: the $350 filing fee and the $55 administrative fee.

What to check with an attorney

• How long the case has been pending compared with the posted processing time for your form and office.
• Whether the delay is in USCIS's hands, or waits on your own answer, on a visa number or on a security check.
• Whether the benefit is one the law leaves to USCIS's discretion, because the government may argue that the court cannot review it.
• What you asked USCIS and what it answered, with dates.
• What the delay costs you now: an expiring permit or status, a job, travel, a family member's wait.
• Whether a decision, which could be a denial, is a result you can accept.

Fees and rules reviewed 26 Oct 2026. Sources below.

Official sources:

1. 28 U.S.C. 1361 (mandamus)
2. 5 U.S.C. 555 (APA)
3. 5 U.S.C. 706 (APA)
4. 28 U.S.C. 1391 (venue)
5. 28 U.S.C. 1914 (filing fees)
6. U.S. Courts: District Court Miscellaneous Fee Schedule
7. Federal Rules of Civil Procedure, Rule 12
8. Federal Rules of Civil Procedure, Rule 4(i)
9. USCIS Policy Manual, Vol. 1, Part A, Ch. 4 (service requests)
10. DHS CIS Ombudsman: DHS Form 7001, Request for Case Assistance
11. 8 U.S.C. 1252 (judicial review)
12. Lee v. Blinken, No. 23-cv-1783 (D.D.C. 15 Feb 2024): TRAC factors, K-1 visa delay claim

What changed: new page on mandamus and APA delay lawsuits for stalled USCIS cases, with court fees, the TRAC factors, the steps and the risks.