Sen. Craig Ethics Investigation

So I open up USA Today over breakfast (it was free with the hotel room) to find that the GOP is calling for an ethics investigation into Sen. Craig's cruising-related-program-activities. The first thing that popped into my mind was something along the lines of "they want to investigate this?".

I mean, seriously, after all the GOP has been through recently the only thing they find serious enough to warrant an investigation is Sen. Craig's private behavior? There's been so much malfeasance on the part of Republicans that you need a scorecard to keep track of it all, but every time Democrats talk about investigations they're accused of playing politics. How then to explain their sudden eagerness to get to the bottom of things regarding Sen. Craig? Some possible explanations:

• Distraction value: The whole Sen. Craig thing doesn't have a whole lot of substance; it doesn't matter all that much in the grand scheme of things whether he was cruising or not. It certainly doesn't impact the operation of the government in any but the most tenuous fashion. However, by raising a big stink Republicans can burnish their currently tarnished ethical credentials without actually doing anything substantive about the issue that might make them (or their friends/colleagues) uncomfortable.
• Homophobia: Malfeasance is OK, but cruising for hot, sweaty, anonymous gay sex is beyond the pale. Its a matter of priorities and principles: graft, greed, and corruption is business as usual, but dare let a penis go someplace that God didn't intend and the entire Republic might crumble.

I feel that I'm on pretty safe ground here with the usual clichès: bark/bite, tempest/teapot, sound/fury/nothing signified.