If he worked for my company, I’d fire him on the spot, no questions asked.
And that would be your prerogative, although you might later find yourself the subject of a wrongful termination lawsuit. However, the only people who can fire Sen. Ensign are the voters of Nevada, and they will have their chance the next time he stands for election.
Why would you fire him..he did nothing illegal. His judgement comes into question...but if we fire everybody because we question their judgement, nobody would be employed.