The Supreme Court agreed Thursday to referee one of the most consequential immigration fights of President Trump's second term: whether his administration can keep undocumented immigrants locked up for the entire length of their deportation case, sometimes for years, without ever letting them ask a judge for bond.

The case, Rhoney v. Barbosa da Cunha, centers on a Brazilian national arrested in Massachusetts last September who challenged his detention under a Department of Homeland Security policy issued in July 2025. That guidance reinterpreted a 1996 immigration law to mean that nearly all immigrants who entered the country illegally and are later arrested must be held without a bond hearing until their case is fully resolved, a process that can drag on for months or years.

A unanimous three-judge panel of the 2nd Circuit rejected that reading, with Judge Joseph Bianco warning the policy "would send a seismic shock through our immigration detention system and society, straining our already overcrowded detention infrastructure, incarcerating millions, separating families," according to Roll Call. Eight other federal appeals courts have sided with that view. But the 5th and 8th Circuits broke the other way, backing the administration, setting up exactly the kind of circuit split the Supreme Court typically steps in to resolve.

A fight over millions of cases

The stakes are enormous. The ACLU told reporters that "millions of noncitizens could be affected by the government's new interpretation" if the policy is upheld nationwide. The Trump administration, for its part, has argued the current patchwork of conflicting circuit rulings is unworkable, telling the Court that "the result is an unworkable patchwork of inconsistent immigration enforcement" that varies depending on where a migrant happens to be detained.

"The result is an unworkable patchwork of inconsistent immigration enforcement" that changes depending on which circuit a detainee is held in, the administration argued in its petition.

The case lands at the Court just as the new term opens, and just as the administration's broader immigration enforcement push — mass arrests, expanded detention capacity and aggressive ICE operations — has become one of the defining and most litigated features of Trump's second term, with multiple related disputes already working their way through lower courts, as CNN reported Thursday.

A ruling for the administration would let DHS hold immigrants without bond nationwide for as long as their case takes, even when that stretches well beyond a year. A ruling against it would restore bond hearings as the norm across the circuits that currently side with the government, forcing immigration judges in Texas, Louisiana, Mississippi, Arkansas, Minnesota, Iowa, Missouri, Nebraska, North Dakota and South Dakota to start granting hearings they currently deny. No argument date has been set yet, but the case is expected to be heard and decided before the Court's term ends next summer, putting the fight squarely in the middle of the 2026 midterm campaign.