Right now, President Obama and Mitt Romney are looking for the one line that will stand out as the defining line of the debate, a line that encapsulates the candidate’s reason for running and all his frustrations with the other guy. It doesn’t necessarily have to be a solution for the nation’s problems. But it does have to immediately resonate with voters. In 1980, the quip that stood out was challenger Ronald Reagan’s dismissive, “There you go again...” to President Carter. Folks knew exactly what Reagan meant: that we had seen through Carter’s attempts to attack Reagan’s supposedly “radical tendencies”...