Actually, Roberts is a conservative, who has drunk the isolationist kool-aid
Krugman was a highly regarded economist at one time too. Having read most of what Roberts has written over the past year, I would hardly consider him a conservative. He is an ardent protectionist which casts serious doubt about him being a good economist. Conservatives have never been economic isolationists. I do not consider Pat Buchanan to be a conservative.
Look at the titles of his articles listed in post #12 and tell me that this man has any real connection left to the Republican party or conservatives in general.
And so on. PCR is not just drinking Kool-Aid, he's jumped the shark straight into full on crazy. Like Krugman, PCR believes that the more outrageous and shrill he becomes the more likely it is someone will notice - like the Nobel committee. He is getting noticed all right, but not because anyone thinks he has anything worthwhile to say.