Whether Mezei, a former resident alien returning after a prolonged trip abroad, was entitled to a hearing and disclosure of the security evidence before being excluded.
Holding
No. Mezei was properly treated as an entering alien, and the Attorney General could exclude him without a hearing or disclosure of confidential security information under the governing emergency regulations.
Reasoning
The Court began from the established rule that Congress and the political branches possess broad, largely unreviewable authority to admit or exclude aliens. Under the Passport Act and the President's emergency regulations, the Attorney General could deny entry to an alien whose admission would be prejudicial to the interests of the United States. The regulations also permitted exclusion without a board hearing when the determination rested on confidential information whose disclosure would harm the public interest.
An alien who has entered the country, even unlawfully, ordinarily may be expelled only through procedures satisfying due process. But an alien seeking initial admission stands differently: for an excluded entrant, the process Congress has authorized is ordinarily all the process that is constitutionally due. Courts may test whether an exclusion order is legally valid, but may not retry the Attorney General's security determination or compel disclosure of its supporting evidence.
Mezei's physical presence at Ellis Island did not amount to an entry into the United States. Congress permitted aliens arriving by sea to be brought ashore temporarily rather than kept aboard ship, but expressly provided that this temporary shelter was not a landing. In immigration law, an alien held at Ellis Island remains legally at the border and retains the status of an applicant for admission.
Nor did Mezei's earlier residence in the United States alter that result. The Court distinguished Kwong Hai Chew v. Colding, where a lawful resident seaman's brief, authorized voyage on an American ship did not interrupt his constitutional protections. Mezei, by contrast, had left without apparent reentry authorization and remained abroad, behind the Iron Curtain, for nineteen months. That extended absence broke the continuity of his residence, so he could constitutionally be treated as an entering alien.