Paul equated a no-fly zone with an act of war based on the U.S. experience in Iraq, which started with a no-fly zone in the 1990s and ultimately ended in war. He also said it is difficult to establish a no-fly zone without some military activity.
"You can't just all of a sudden turn a switch and say don't fly over Libya," Paul said. "You have to bomb a lot of anti-aircraft sites and a lot of military establishment. So the war is on."
Paul also argued that there is no legitimate reason for a no-fly zone over Libya, which is entering a civil war but does not pose any national security threat to the United States.
"Now, what moral right do we have to participate in war activity against Libya?" he asked. "Libya hasn't done anything to the United States. It would be foolish, it would have a downside, and we should think very, very carefully before we go expanding the wars that we're already involved in."
Paul is one of 10 House members who sponsored a resolution on Wednesday to direct the president to remove U.S. troops from Afghanistan.