It isn't only -- or even principally -- the "Blue Dogs" which make the "Democratic Congress" nothing but an enabling instrument of the Bush White House and its right-wing policies. Far worse are the establishment-defending, soul-less, belief-less, self-perpetuating "liberal Senators" like Feinstein who render the concept of "opposition party" nothing more than a deceitful illusion. Dianne Feinstein is the drained and Bush-enabling face of the 2007 Democratic Congress.
Must -read Glenn Greenwald