Sen. Rand Paul (R-KY) introduced legislation on Tuesday that would prohibit law enforcement agencies from using unmanned aerial vehicles to conduct surveillance without a warrant.

“I’m not against technology per se,” he explained on CNN. “What I am for are the constitutional processes that protect our civil liberties. So, you know, it’s not like I’m against the police using cars or against them using airplanes or helicopters or robots. But I am for personal privacy for saying that no policeman will ever do this without asking a judge for permission.”