Immigration · Primary-source case analysis

Clark v. Martinez: The Zadvydas Detention Limit Applied to Inadmissible Noncitizens

By Aneeta Mishra and Timothy Chan

Published April 27, 2026 · Updated October 17, 2026

Decision: Clark v. Martinez, 543 U.S. 371 (2005).

Clark v. Martinez applies one consistent construction of the post-removal-period detention statute to different categories of noncitizens.

Cuba would not accept the detainees’ return

Two Cuban nationals had final removal orders but remained detained because the United States could not effect removal. The government argued that the Zadvydas limitation did not protect people treated as inadmissible.

One statutory phrase receives one construction

Section 1231(a)(6) uses the same operative language for several categories. The Court rejected interpreting those words differently depending on which category the detainee occupied.

Detention is limited when removal is not foreseeable

Zadvydas construed the statute to authorize detention only for a period reasonably necessary to accomplish removal, with six months as a presumptively reasonable period. That construction also governed the inadmissible category.

Disposition

On January 12, 2005, the Supreme Court affirmed the Ninth Circuit’s judgment for Martinez, reversed the Eleventh Circuit’s judgment against Benitez, and remanded both cases. The government had shown no substantial likelihood of removal in either case. Clark, 543 U.S. at 386–387. Release could remain subject to appropriate conditions; the ruling did not cancel either removal order.

Key takeaways

• Collect the final removal order and the full custody and court-review history before calculating the applicable removal period. Do not assume the six-month presumption begins with every ICE arrest.
• Gather evidence about travel documents and receiving-country cooperation.
• Use the six-month presumption as a framework, not an automatic endpoint.
• Address conditions and later changes affecting foreseeability.