Of course what that really means is that he claims to be a libertarian without consistency. That's sad.
It is easy to agree that The State, and specifically the US Federal government, has gotten too big, too powerful, and too corrupt. It seems to be a little harder to admit that this is where externally-imposed government will always, inevitably lead.
Someone sent me a couple of links a while ago that are incredibly good reading, and are wonderful tools for stripping away those inconsistencies. Both are a little long, but I highly recommend you check them out.