>> it's not a crime or a misdemeanor under the constitution to make a mistake. >> after bush's mistake, the country was totally polarized in its view of the president and the partisan gap was the widest ever recorded. >> ladies and gentlemen, the president of the united states. >> impeachment fever would only get worse under the next president. >> change has come to america. >> in 2008, barack obama was elected on a promise, to help heal the country's extreme partisan divide. >> yes we can! yes we can! >> but the candidate who had campaigned on "yes we can" ran into a wall of republican opposition. >> hell no, you can't. >> the tea party formed around an almost fanatical opposition to barack obama. in 2010 it propelled a wave of