Whether the freedom to travel abroad is part of the liberty protected by the Fifth Amendment.
Holding
Yes. Freedom of movement, including travel across national borders, is an important aspect of the liberty protected by the Fifth Amendment's Due Process Clause.
Reasoning
The Court treated freedom of movement as deeply rooted in Anglo-American legal tradition and in the Nation's constitutional heritage. Travel abroad may be essential to work, family relationships, education, access to information, and participation in public life; it is therefore not a trivial privilege that the Government may restrict casually.
The Solicitor General conceded that the right to travel is part of Fifth Amendment liberty. Although the Court did not decide the full range of permissible restrictions on foreign travel, it began with the premise that the Government was burdening a constitutionally protected activity.