I'm thinking about Nixon in 73-74 after Watergate. We have a long period of national trauma played out every day on TV. Remember Clinton in 96-97? What do we get? A wounded President a divided congress and a deeply divided nation. After two years of this stuff perhaps the Republican party manages to flip the Senate, and perhaps gets enough to vote for impeachment. Its going to take that long to get enough evidence anyway because everyone is going to lawyer up. 2014 comes around the heat gets too hot and with the 2016 elections on the horizon the Presidents handlers look around and force Obama to resign. We get Biden! Wow what a bargain! Plus probably a presidential pardo too. Meanwhile the nation tanks & we drift like flotsam for 4 years.