What Is a Writ of Mandamus?
A writ of mandamus is a federal court order compelling a government agency — in this case USCIS — to perform a duty it is legally obligated to perform. When USCIS takes an unreasonably long time to adjudicate your immigration case, filing a mandamus lawsuit in federal district court may force the agency to act.
This is considered a last resort after other remedies (expedite requests, congressional inquiries, ombudsman complaints) have failed.
When Should You Consider a Mandamus?
A mandamus lawsuit may be appropriate when your case has been pending significantly longer than published processing times, you have made multiple inquiries and expedite requests without resolution, USCIS has not provided any substantive reason for the delay, background checks or administrative processing have been pending for over a year, and you have suffered concrete harm from the delay (job loss, inability to travel, family separation).
How the Process Works
An immigration attorney files a complaint in the appropriate U.S. District Court naming USCIS, DHS, and the relevant agency heads as defendants. The complaint argues that USCIS has a non-discretionary duty to adjudicate your application within a reasonable time and has failed to do so. The government typically has 60 days to respond. In many cases, USCIS adjudicates the underlying application shortly after being served with the lawsuit — often before the government even files a response.
Costs
Attorney fees for a mandamus action typically range from $3,000 to $7,000. The federal court filing fee is $405. While this is a significant expense, for cases stuck for years with no movement, the cost can be justified by the result — many attorneys report that 80-90% of mandamus cases result in USCIS taking action within 60-90 days of filing.
Risks and Limitations
A mandamus compels USCIS to make a decision — but it does not guarantee an approval. USCIS could deny your case after being forced to adjudicate it. Additionally, if USCIS can show it had a legitimate reason for the delay (such as national security vetting), the court may side with the government. There is no risk of retaliation — USCIS is prohibited from taking adverse action against you for exercising your legal rights.
Note: Before filing a mandamus, exhaust administrative remedies first: file an expedite request, contact the USCIS Ombudsman, and submit a congressional inquiry. Courts want to see that you tried other options first.