"Plaintiff first attempts to a bring claim under the Fourth Amendment for unlawful seizure.
The events were organised by a newly hatched organisation called Restore the Fourth, named after the constitutionally guaranteed protection against illegal search and seizure under the Fourth Amendment.
Setting regulations under the Fourth Amendment guarantee against unlawful search is of the utmost importance.
The court ruled that installing the physical device "searched" the car under the Fourth Amendment.
Sergeant Quon sued the city, saying this search was illegal under the Fourth Amendment.
They have immunized the surveillance program from challenges under the Fourth Amendment, which bans unreasonable searches and seizure.
Judge Richard Leon's ruling that the phone-metadata program likely constitutes "an unreasonable search under the Fourth Amendment".
The order does not cover the content of phone calls, which receive greater protection under the Fourth Amendment.
It is unclear whether long-term tracking of people's movements by the government raises privacy rights under the Fourth Amendment.
Free of criminal liability, Mr. Callahan then sued the officers for violating his rights under the Fourth Amendment.
"We first clarify that facial challenges under the Fourth Amendment are not categorically barred or especially disfavored," Sotomayor wrote.
