494 U.S. 259 (1990)
The case of United States v. Verdugo-Urquidez addresses the complicated issue of the Fourth Amendment's applicability to non-citizens who are outside the United States.
Does the Fourth Amendment's protection against unreasonable searches and seizures apply to non-U.S. citizens residing outside the United States whose properties are subjected to search by U.S. agents?
The Fourth Amendment's protection against unreasonable searches and seizures does not apply to non-citizen foreign nationals outside the United States being searched by U.S. law enforcement or military personnel.
The Supreme Court held that the Fourth Amendment does not apply to searches and seizures by U.S. officials of property owned by nonresident aliens located in a foreign country.
This case is pivotal for students and legal practitioners in understanding the scope of U.S. constitutional protections. By delineating the limits of the Fourth Amendment's reach, it clarifies the extent to which constitutional rights can impact U.S. actions abroad. The decision underscores the principle that the Constitution does not entirely follow the flag, meaning it does not universally apply in all situations involving U.S. government conduct outside national borders. This limitation is especially relevant in debates regarding international law, national security, and human rights.