“We have a message for Attorney General Holder over at http://huffingtonpost.com,” read a message from the Huffington Post political Twitter account earlier this evening. The website's home page is one big splash calling for Eric Holder’s exit from the Obama administration, suggesting that the news reported earlier by NBC News was the final straw for liberals who are critical of Obama’s attorney general. NBC News’ Michael Isikoff reported that Holder signed off on the search warrant that identified Fox News reporter James Rosen as a “possible co-conspirator”authorizing seizure of his private emails. The Huffington Post page also highlights Holder’s record...