Why is Larry Craig still in the Senate?

"Conservative" Republican Senator Larry Craig, the guy arrested for tapping his foot in an airport men's room, continues to hold his seat (ba dum pum) in the Senate. (I actually had the pleasure of walking by Larry Craig yesterday in the Senate. And no, I didn't ask directions to the bathroom.) Well it's looking like the Senate is stonewalling his ethics investigation. It's good to be Queen.