You should read her book "Treason" to get the real scoop on McCarthy. She has done an excellent job of researching that era, complete with copious footnotes, and I think you'll be very surprised - and cheered - to hear that there is another side to the story. It ain't like the Left tells it, but it happened back before there were alternative sources of information (e.g. the Internet, or right-wing talk radio) to counter their distortions of history.
However, I find this article silly. Just plain silly to suggest that only an Ivy Leaguer is capable of being on the Supreme Court IMO.