This "may" occur is real conservatives are voted into office @ the 2014 elections...if not - then rush out and take a photo - because that will be the only left of what the US was...unless Obama is stopped and then impeached due to conservative election results - then the US is over! Voter fraud and the US news media outlets have betrayed us all!
As it stands now, Impeachment will never happen, besides Impeachment alone is merely a political slap on the wrist.
However, if Republicans can hold the House and win the Senate, then Impeachment could be a possibility, even Conviction and Removal from Office in the Senate; that is the goal. The very down side of such an action (other than the Constitutional crisis it will generate) is Biden will become President ...