Eugene Robinson, Washington Post
WASHINGTON -- Who are the dastardly enemies of free enterprise who decided to make an issue of Mitt Romney's tenure at the private-equity firm Bain Capital? Er, those would be his fellow Republicans.Listen to what Newt Gingrich said in January: "The Bain model is to go in at a very low price, borrow an immense amount of money, pay Bain an immense amount of money and leave. I'll let you decide if that's really good capitalism. I think that's exploitation."Or what Rick Perry said that same month: "There is something inherently wrong when getting rich off...