This is not a mandamus claim. It is a transfer of jurisdiction — and it is the strongest delay remedy in immigration law.
Almost every immigration delay remedy asks a court to make an agency decide. Section 1447(b) does something no other provision does: once the 120-day clock has run and the applicant files, the district court may decide the naturalization application itself. Three courts of appeals have held that filing strips USCIS of the power to act on the case at all. If you were interviewed more than 120 days ago and have heard nothing, this is the page that applies to you.
The provision is short, and every word of it matters:
“If there is a failure to make a determination under section 1446 of this title before the end of the 120-day period after the date on which the examination is conducted under such section, the applicant may apply to the United States district court for the district in which the applicant resides for a hearing on the matter. Such court has jurisdiction over the matter and may either determine the matter or remand the matter, with appropriate instructions, to the Service to determine the matter.”
The most consequential question under § 1447(b) is what happens to the agency’s authority once the petition is filed. The government long argued that USCIS retained the power to decide the application anyway — and, if it denied, that the denial mooted the court case. Three courts of appeals have rejected that position.
The first court of appeals to reach the question held that a properly filed § 1447(b) petition vests jurisdiction in the district court and takes it away from the agency. The reasoning was textual and, once stated, difficult to answer: if the agency could still decide the matter, the statute’s grant of power to the court to “determine the matter” would mean nothing, and its separate authority to “remand the matter, with appropriate instructions” would be surplusage.
Reversing the district court, Judge Motz wrote for a divided panel that a timely § 1447(b) petition vests the court with exclusive jurisdiction. “Nothing in the statute suggests that Congress intended that an agency could subvert Congress’ choice to vest the district court with jurisdiction to ‘determine the matter’ once an applicant files a timely § 1447(b) petition.”
This is the case to know, because it addresses what the government actually does. Bustamante was interviewed in February 2007. More than 120 days passed with no decision, and in July he filed a § 1447(b) petition in the Southern District of New York. The next month USCIS denied his application. The district court held that the denial mooted the petition and dismissed. The Second Circuit reversed, holding on an issue of first impression in the circuit that “only the district court has jurisdiction to determine a naturalization application” once a proper § 1447(b) petition is filed. Because USCIS lacked the power to act, its denial had no legal consequence and the case was not moot. The court framed the scheme as something like concurrent jurisdiction exercised at the applicant’s election: leave the application with USCIS, or move it to the district court by filing. USCIS may still recommend a disposition or ask for a remand — but it is for the court to “determine the matter or remand the matter.”
The practical consequence is unusual and worth stating plainly. In an ordinary delay case, the agency can end the litigation at any moment by adjudicating — often on the eve of a ruling, and often adversely. Under § 1447(b), once the petition is on file, it cannot.
The statute gives the district court two options, and in practice the choice turns on whether the record is complete and whether anything is genuinely contested.
A petition that asks only for “an order compelling adjudication” invites a bare remand and gives the court no reason to keep the case. Where the file supports it, ask the court to determine the matter, and ask in the alternative for a remand with a date certain and retained jurisdiction. That framing also matters for fees — a negotiated remand entered to effectuate a settlement will not support an award under the Equal Access to Justice Act.
Delay, silence after interview, and denial are governed by three different provisions, and using the wrong one is the most common error in this area.
| Situation | Governing provision | What the court can do |
|---|---|---|
| Filed, never interviewed | Mandamus Act and APA § 706(1) | Compel the agency to act — see N-400 pre-interview mandamus |
| Interviewed, 120+ days, no decision | 8 U.S.C. § 1447(b) | Determine the application, or remand with instructions |
| Denied, and N-336 exhausted | 8 U.S.C. § 1421(c) | De novo review — see § 1421(c) review |
Note the sequence in the middle row. Section 1447(a) gives an applicant whose case has been denied the right to a hearing before an immigration officer on Form N-336; § 1421(c) supplies de novo district court review once that administrative step is complete. Section 1447(b) is not part of that chain at all. It is a separate door, and it is open only while the application is still undecided.
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N-400 pre-interview mandamus is the remedy before the interview has happened.
Section 1421(c) de novo review applies once the application has been denied.
FBI name-check delays are the most common explanation offered for post-interview silence.
FOIA requests can produce the underlying refugee/asylum file.