533US2 686 Unit: $U87 [10-21-02 18:35:10] PAGES PGT: OPIN ZADVYDAS v. DAVIS Opinion of the Court Mr. Ma would remain nonviolent and not violate the conditions of release.” App. to Pet. for Cert. in No. 00–38, p. 87a. In 1999, Ma filed a petition for a writ of habeas corpus under 28 U. S. C. § 2241. A panel of five judges in the Federal District Court for the Western District of Washington, considering Ma’s and about 100 similar cases together, issued a joint order holding that the Constitution forbids postremoval-period detention unless there is “a realistic chance that [the] alien will be deported” (thereby permitting classification of the detention as “in aid of deportation”). Binh Phan v. Reno, 56 F. Supp. 2d 1149, 1156 (1999). The District Court then held an evidentiary hearing, decided that there was no “realistic chance” that Cambodia (which has no repatriation treaty with the United States) would accept Ma, and ordered Ma released. App. to Pet. for Cert. in No. 00–38, at 60a–61a. The Ninth Circuit affirmed Ma’s release. Kim Ho Ma v. Reno, 208 F. 3d 815 (2000). It concluded, based in part on constitutional concerns, that the statute did not authorize detention for more than a “reasonable time” beyond the 90-day period authorized for removal. Id., at 818. And, given the lack of a repatriation agreement with Cambodia, that time had expired upon passage of the 90 days. Id., at 830–831. 3 Zadvydas asked us to review the decision of the Fifth Circuit authorizing his continued detention. The Government asked us to review the decision of the Ninth Circuit forbidding Ma’s continued detention. We granted writs in both cases, agreeing to consider both statutory and related constitutional questions. See also Duy Dac Ho v. Greene, 204 F. 3d 1045, 1060 (CA10 2000) (upholding Attorney General’s statutory and constitutional authority to detain alien indefinitely). We consolidated the two cases for argument; and we now decide them together.