What Rudy Giuliani did this week was stupid. What Scott Walker did ought to disqualify him as a serious presidential contender...... And Walker, just a few seats away, said . . . nothing. Asked the next morning on CNBC about Giuliani’s words, the presidential aspirant was spineless: “The mayor can speak for himself. I’m not going to comment on what the President thinks or not. He can speak for himself as well. I’ll tell you, I love America. There are plenty of people, Democrat, Republican, independent, and in between who love this country.” But did he agree with Giuliani? “I’m in New...