The age-old way to marginalize somebody, call him a "whacko" or a "crackpot". I'm surprised you didn't call him a 'xenophobe' too. Yet Pat Buchanan is quite mentally and emotionally stable, has a high IQ, is well read and well educated, is a very high acheiver in America as a politician, a journalist, a prolific author, a TV host; yeah he's quite a "whacko".
As the Bible says, judge all things by their fruits, and the fruits of many of Buchanan's prophesies is that they have proven to be true.
Ironically, Pat is right about 99% of the issues. His anti-semitism will get him everytime, however.
Nah, I'm xenophobic, and some of my best friends are crackpots. I'd have a beer with them but won't run them for public office.
I'll have a beer with Buchanan any time, although I imagine he'd see me in being in the "amen corner" of the Israel Defense Minstry. Heck, even Keyes, who I do think has a great mind but who I wouldn't run for dogcatcher, cornered Buchanan about his overt appeals to racism and antisemitism.
BTW, Buchanan, being something of an Arab-ophile, may wish to have a word about your screenname and tagline, but I guess politics does make strange bedfellows.