Looks like the government is trying to see what Tor Browser users are doing.
FBI May Be Behind Tor Browser Focused Malware : Read more
FBI May Be Behind Tor Browser Focused Malware : Read more
Try reading this.
"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."