You can go back through his podcasts if you wish. He has a very consistant record and had a great interview with Ron Paul on his End the Fed book, etc.
He has admitted his metamorphasis away from the neo-con foreign policy, but he is a very Conversative/Libertarian guy.
It really irritates me when some folks of the liberty persuasion have some sort of "purity" test. When 99% of talk radio is neo-con and then there are few like Jason Lewis (nationally syndicated) out there saying all of the right things, we should take everything we can get.
I compare this to the Glenn Beck angle. Yes, I disagree with him on certain areas (and his Medina tactics, hawkish foreign policy, etc), I would still rather he be there than not be. Obviously, I wish talk radio or the mainstream was full of Rothbardian whitty intellectuals... but that is not the case.
Personally, I'll take whatever I can get that promotes liberty.
~Andy