The New Yorker’s Jane Mayer, in a pair of blog posts, served up the latest attempted Democratic Party talking point on freshman Texas Senator Ted Cruz: that Senator Cruz is the second coming of Joe McCarthy. (ThinkProgress coordinates with a predictable illustration for those too simple-minded to get Mayer’s point). As it happens, I have some firsthand knowledge of the subject of Mayer’s vague, thinly-sourced hit job. She’ll have to do better next time, because Ted Cruz is right about Harvard Law School in the mid-1990s. If she’d talked to more people, she might have figured that out. Here’s the...