Immigration Lawsuits in U.S. District Courts Reach Record Levels

Federal district courts recorded more than 41,000 immigration-related civil cases over the 12 months ending in March 2026. The monthly total climbed to 9,911 filings in March alone, driven largely by habeas corpus petitions filed by individuals in immigration detention.

Between March 2021 and the first months of the current administration, monthly immigration case filings in federal district courts ranged between 500 and 1,000. Filings began rising sharply after September 2025 as arrests by immigration authorities increased.

In March 2025, habeas petitions made up 105 of 945 total immigration cases filed that month. The Transactional Records Access Clearinghouse at Syracuse University reported that habeas filings rose more than 85 times over the past year while naturalization suits increased 1.8 times.

Detainees have a constitutional right to file such petitions, and some immigration attorneys have succeeded in obtaining release orders or bond hearings when detention rests on administrative rather than judicial warrants.

and Pending Legal Questions

The Western District of Texas recorded nearly 3,500 habeas cases between October 2025 and March 2026, the highest total of any federal judicial district. The Eastern District of California and Southern District of Texas followed. More than 300 district judges have issued orders directing release or bond hearings in cases challenging mandatory detention policies.

Appeals courts have not yet ruled on whether the administration's interpretation of the Immigration and Nationality Act aligns with statutory requirements.