The justice argues that the "reasonable expectation of privacy" test and the third-party doctrine are indefensible in theory ...

The Fourth Amendment doesn’t ask how you feel. It asks what a reasonable person would perceive. That’s not a technicality — ...

Kagan insists that the Fourth Amendment cannot be defeated by slicing invasions of privacy into pieces small enough to appear ...

WASHINGTON – Conservative Republicans have a three-word response to government demands to spy on Americans’ telecommunications: “Get a warrant.” When it comes to the same government breaking into ...

Under what has come to be known as the Katz test, a defendant seeking to invoke Fourth Amendment protections against a warrantless government search must prove that he or she had a subjective ...

The Fourth Amendment protects Americans from unreasonable searches and seizures, including digital data. Government agencies like ICE and the Department of Homeland Security are reportedly using ...