Exactly.
And has anyone stopped to think about the next two in line?
Considering that a fair number of posters here seem to be equating impeachment with removal from office, my guess is no.
Impeaching 0bama without a guaranteed means of having the Senate remove him from office would be political stupidity for the GOP, just as impeaching Clinton was back in 1998.
And, we have a winner!!!! Indeed, remove Obozo and control goes to someone who is even less aware of his surroundings and more power would be deferred by default to Pelousi. That's a lose-lose-lose combination. Focus should be on 2010 and 2012 rather than Impeachment (which is really just a pipe-dream given this congress). Batten down the hatches and weather the storm until then folks.
I think it would be great if Biden ascended to the presidency. He'd have to fire some people and install his own team...it'd keep them preoccupied with gamesmanship amongst themselves for at least a few months. The country would get a reprieve.