It has nothing to do with testicular fortitude and everything to do with media. Republicans that stood up for constitutional principles have been destroyed by the MSM, repeatedly over the last few decades. Now there is enough new media, and the MSM has lost enough credibility, that they can be destroyed from two fronts: the MSM and the new media.
Now even relatively minor scandals that would have brought down a Republican, but never have bothered a Democrat, can bring down Democrats, such as Weiner in the twitter scandal. Republicans such as Lugar have shown that conventional appeasement of the MSM is not a safe harbor.
Old Republicans have to fear both the MSM and the new media, so they are caught between a rock and a hard place.
Democrats have only the new media to fear, but they feared nothing before.
We have been transitioning into a new age since 1994.
I didn't have to read beyond this statement to know the rest was crap, but I read it anyway so here goes: Your own argument contradicts itself.
You hourself pointed out Weiner a Democrat was brought down in a twitter scandal, and that Dick Lugar, an old-guard republican wasn't safe appeasing the media.
If Boehner and the Republican's had the balls, they'd go full bore after Holder. Using your own argument and logic, no Democrat or Republican is safe so why wouldn't they turn on Holder? Hell, they're already starting to turn on Obama as recent published stories indicate.
But as I said, Boehner lacks the testicular fortitude (BALLS) to do it. That makes him a spineless COWARD in my book, and time for the Tea Party to show him the door too.