FAQs & Practical Guidance
Straight answers, no invented numbers
The questions people ask before filing are practical and almost never doctrinal. What does it cost. How long will it take. What are the chances. What if the agency approves the case a week after the complaint is filed. This section answers them directly, and where an honest answer is that the information does not exist, it says so rather than filling the space.
Start with the question asked most often. There is no published success rate for mandamus petitions. No court system reports outcomes by writ type in a form that supports a percentage, and any figure quoted without a source behind it was invented; what can be described honestly is which factors courts have said matter. The answerable questions have statutory answers. The civil filing fee is set by 28 U.S.C. § 1914, with the in forma pauperis route in 28 U.S.C. § 1915. The most dependable timing anchor in a district-court case is the 60-day response period of Fed. R. Civ. P. 12(a)(2). Fee recovery against the United States runs through the Equal Access to Justice Act, 28 U.S.C. § 2412(d), and a petitioner whose case becomes moot because the agency acted voluntarily may recover nothing, since Buckhannon Board & Care Home, Inc. v. West Virginia Department of Health and Human Resources, 532 U.S. 598 (2001), rejected the catalyst theory of prevailing-party status. Two further answers are worth stating plainly: filing changes nothing about the agency's other deadlines, and a second petition on the same facts is not barred by the first, though a court that denied one will want to know what has changed.
These answers assume the underlying claim already makes sense. Whether it does is a question for Foundations, and the standard an agency-delay complaint has to meet is in Agencies & Administrative Law or, for visa and USCIS cases, Immigration Delays. The full procedural sequence, from naming the respondent to responding to a motion to dismiss, is in The Practice Desk.
Straightforward answers to the questions people ask most often before filing a writ of mandamus.
All Articles
Other categories
Mandamus Basics & Legal Foundations
Core definitions, history, and legal theory behind the writ of mandamus in United States law.
10 articles → Ref. MAND-IIFederal Mandamus Actions
How mandamus works in U.S. district courts and courts of appeals, including the key federal statutes and rules.
10 articles → Ref. MAND-IIIState Court Mandamus
Mandamus practice at the state level, including state-specific statutes, procedures, and equivalents like New York's Article 78.
10 articles → Ref. MAND-IVImmigration Mandamus (USCIS & Visa Delays)
Mandamus as a remedy for stalled immigration petitions, naturalization applications, and visa processing delays.
10 articles → Ref. MAND-VMandamus in Family, Probate & Civil Court
How mandamus applies to family court delays, probate disputes, and other civil administrative matters.
10 articles → Ref. MAND-VIMandamus vs. Other Extraordinary Writs
How mandamus compares to certiorari, prohibition, quo warranto, habeas corpus, and other litigation tools.
10 articles → Ref. MAND-VIIFiling & Procedure Guide
Practical, step-by-step guidance on preparing, filing, and litigating a mandamus petition.
10 articles → Ref. MAND-VIIILandmark Mandamus Case Law
The foundational and modern court decisions that shaped how mandamus is understood and applied today.
10 articles → Ref. MAND-IXMandamus Against Government Agencies
How mandamus applies across specific federal agencies, from Social Security to the IRS to environmental regulators.
10 articles →Related Resources
These are external sites outside this publication, part of the same editorial network.
An immigration attorney's practice site on filing federal writs of mandamus to compel USCIS and other federal agencies to act on delayed applications, with case law, filing guidance and a published flat fee.
A practice site on Form N-600K citizenship claims for the children of U.S. citizens living abroad, including mandamus relief against USCIS delay as children approach age 18.
An Italian-language guide to U.S. citizenship — naturalization, derivative citizenship and dual-citizenship forms N-400, N-600 and N-600K — including mandamus for stalled cases.