Sigh: Chris Christie vs. Cubs Fan in Milwaukee

Who thinks New Jersey Governor Chris Christie should have the nickname "America's Punching Bag"?
The lame-duck Governor who's made headlines over the past few weeks for lounging on a closed beach during a government shut down and being booed and heckled during a New York Mets game has found himself in trouble again at a baseball game.
The latest incident happened in Milwaukee during a Brewers/Cubs game where the sports fan/governor was visiting his son who works for the Brewers.
At some point during the game after walking up the stairs to get what looks like a bowl of Nachos, the Governor found himself getting in the face of a Cubs fan who said something to him while Christie walked by.
And a friend seated nearby--well, he caught the end of the um---discussion...