The purpose of this legislation is to repeal the Foreign Intelligence Surveillance Act (FISA) of 1978 and restore certain privacy protections for United States citizens. It aims to enhance the Fourth Amendment rights, which protect individuals from unreasonable searches and seizures. Key provisions of this legislation include the complete repeal of FISA, which currently allows for surveillance and data collection on foreign intelligence matters. The new law requires that any surveillance or search involving a United States citizen must be conducted with a warrant issued by a federal court.