That's one of the problems I have with Barr and I could never vote for him. He seems to flipflop on too many issues, he voted for Patriot Act before he was against it. He should have known better and never voted for it to begin with.
In the words of Congressman Kucinich:
http://www.youtube.com/watch?v=PuybefOu0t0
Edit: sorry i broke my promise not to directly criticize anyone