Congressman Billybob posted on that a week ago. Powell won election to the seat and the House refused to seat him. He sued, won and took his seat. Congress immediately voted to expel him by the required 2/3 majority. Powell went off to Bimini. Burris case could be the same sequence of events if 7 or 8 Republican votes cand be mustered.
That's assuming they can even get all the democrat votes. It'll never ever happen. Not in this chickenshit senate.