It would take something drastic - like Obama bucking congress and ordering a strike on Syria, and then a couple of our ships getting sunk. Other than than, Speaker Boner does not have the fortitude or acumen for such an endeavor, and the nation would have to be beyond it's current state of up to its lips in shit to perhaps sunken. At the point that the House passes articles of impeachment it still takes a super majority in the Senate for removal. And then we would be left with Joe the Stroke patient for POTUS, unless you removed them both. Then Speaker Boner would have to step up........Perhaps Thomas Jefferson should have recommended a revolution every 2-3 generations instead of predicting a revolution every 2-3 generations........