Exits: Having helped bring the Chicago Way to Washington, the White House chief of staff leaves a crisis he helped create to bring the nanny state to the heartland. On the surface, Rahm Emanuel is leaving to fulfill a personal ambition — to be mayor of Chicago. In reality, he's jumping a sinking ship, and the credentials he brings to a mayoral race in the Windy City may also be his political albatross. He heads for the self-described "city that works" leaving behind a country that doesn't. Emanuel is famous for saying what has become the mantra of the Obama...