Donald Trump going to Mexico could have had a certain "Nixon goes to China" flavor about it, and he actually was getting some good reviews for crossing the very low bar of "not totally embarrassing himself or his country" -- at least for the first few hours. Then he went to Phoenix, and Mr. Hyde came back out.
It's still only August, but already the predictions that this would be an exceedingly banal presidential election campaign look like they've already come true. This week's campaign news might be summed up as an elementary school playground shouting match: "You're a bigot!" "No, you're a bigot!" Sigh.
The Republican presidential nomination race has previously devolved to the level of an elementary school playground (penis-measuring in a national debate), and has now risen to at least high school (if not a college frat house) with the vicious battle going on between Donald Trump and Ted Cruz over who can insult each other's wives the most.