Of course you can't prove whether you have been searched without a warrant or wiretapped without over site or cause, the government hides these records from public view, even from judges. They use the argument in court that if you can't prove you were searched than you can't sue the government for violating your liberties, and they don't have to prove to the judge they didn't do it because of "state secrets". In a single blow they violate almost the entirety of the Constitution and the Bill of Rights. They can use any information they gain illegally to prosecute you in court, and keep the "evidence" they have secret because of their "state secrets" privilege, barring even the court from over viewing the evidence. This is treason!