Sen. Rand Paul (R-KY) on Wednesday took the the Senate floor to filibuster the nomination of John Brennan to be the next director of the Central Intelligence Agency (CIA).

“I’m here to filibuster John Brennan’s nomination to be director of CIA,” Paul explained. “I will speak for as long as it takes.”

The Kentucky Republican is demanding answers from the Obama administration about whether American citizens can be targeted by government drones within U.S. borders.