Zadvydas v. Davis
The Supreme Court ruled that federal immigration law does not let the government detain a deported immigrant forever just because no country will accept them back. Instead, once removal is no longer reasonably likely to happen soon, the detention has to end.
The decision applies to immigrants who had already been legally living in the United States before being ordered removed, and it sets up a six-month benchmark after which courts can step in to review whether continued detention still makes sense.
“It does not permit indefinite detention.”
The Court's core holding that the detention statute has an implicit time limit.
How it got here: Lower courts split: the Fifth Circuit upheld Zadvydas's continued detention while the Ninth Circuit ordered Ma released; both sides asked the Supreme Court to resolve the conflict.
The Case in Depth
What happened
Kestutis Zadvydas, who came to the U.S. as a child but had a long criminal record, and Kim Ho Ma, a former refugee convicted of manslaughter, were both ordered deported. But neither could actually be deported: no country would accept Zadvydas, and Cambodia had no return agreement for Ma. Immigration authorities kept both men locked up anyway, well past the normal 90-day removal window, while officials kept trying to arrange their departure.
The question before the Court
Can the government lock up a legal immigrant indefinitely after a deportation order, just because no other country will take them back?
Why it matters
Thousands of immigrants who cannot be deported because their home countries refuse to take them back can now ask a federal judge to review whether their continued detention is justified, rather than being held in immigration custody indefinitely with no clear end point.
What changes now
The Court sent both cases back to the lower courts to apply this new framework. Each detainee's situation must now be reassessed under the six-month benchmark and the 'reasonably foreseeable removal' standard the Court laid out, with federal habeas courts able to review whether continued detention is still justified. This is a final merits decision, though individual outcomes for Zadvydas and Ma will depend on further proceedings.
What this does not decide
The Court expressly limited its ruling to immigrants who had already legally entered the United States, saying that immigrants stopped at the border and never admitted would present a different question. It also left aside terrorism and other national-security detention scenarios, which it said might justify greater deference to the government.
Concurrences and dissents
Dissent — Justice Scalia
Justice Scalia argued that a removable alien who cannot be sent elsewhere has no constitutional right to release into the United States at all, relying on Mezei to say that alien status itself defeats any claim to release. Unlike Kennedy, he rejected the idea that courts could ever order release in this context, calling the claimed right simply a repackaged demand to remain in the country.
Dissent — Justice Kennedy
“The Court having reached the wrong result for the wrong reason, this respectful dissent is required.”Kennedy's central objection that the majority misapplied the rule against needlessly deciding constitutional questions.
Justice Kennedy argued the majority rewrote the statute rather than interpreted it, ignoring the text and structure of the immigration law to avoid a constitutional question that was not squarely presented. He would have upheld the Attorney General's authority to detain dangerous or flight-risk aliens without a fixed time limit, while suggesting due process requires only that detention not be arbitrary or capricious and that adequate administrative review procedures exist.
How the Court got there
The legal reasoning, step by step
- The Court first asked whether the detention statute's 'may be detained beyond the removal period' language set any time limit at all, noting that reading it as allowing detention forever would raise a serious constitutional problem under the Fifth Amendment's Due Process Clause, which protects against unjustified physical confinement.
- Applying the rule that courts should read statutes to avoid serious constitutional doubt where a fair alternative reading exists, the Court looked for a construction of the statute that would sidestep the due-process problem rather than assume Congress meant to authorize open-ended detention.
- The Court distinguished this case from an earlier ruling, Mezei, which allowed indefinite detention of a person who had never legally entered the country, explaining that once someone has actually entered and lived in the United States, they gain due-process protections that someone stopped at the border does not have.
- Because detention aimed at making sure someone shows up for deportation no longer serves any real purpose once deportation itself becomes unlikely, the Court reasoned that the government's stated goal for the detention--ensuring removal--stops justifying confinement once removal isn't realistically going to happen.
- The Court found nothing in the statute's text or history clearly showing that Congress meant to authorize indefinite confinement, so it read in an implicit limit: detention is allowed only for a period reasonably necessary to actually carry out removal.
- To make this workable for courts, the Court adopted a six-month benchmark: after six months of post-removal-period detention, if a detained immigrant shows there's no significant likelihood of removal in the foreseeable future, the government must produce evidence to rebut that showing or the person should be released under supervision.
Doctrinal impact
Cases affected by this decision
Distinguishes Shaughnessy v. United States ex rel. Mezei (345 U.S. 206)
The Court said Mezei doesn't control because it involved an alien who had never legally entered the country.