Surely missing a session is not grounds for expulsion, especially if there is no official business.
The entire Democrat caucus could stay away and the Republicans could make quorum.
Maybe you’re talking about impeaching Obama? That can’t be done in a day.
Joint session. The House passes the articles of impeachment. The Senate then votes to convict. Can be done in 10 minutes.
Only need 2/3 of Senate members present to convict.