By effectively cornering the market on anti-Administration animus, Fox News has had a robust 2009 so far, and the recent decision by the White House to declare war on the channel is not likely to put a dent in the ratings. That decision has dispirited some of the President’s well-wishers. It has also puzzled them. In American politics, it should be considered a good thing when, after you have won a Presidential election by more than nine million votes, your chief critics accuse you of filling your Administration with Nazis, Maoists, anarchists, and Marxist revolutionaries. That is the voice of the fringe, and the fringe is exactly where you want the opposition to set up permanent shop.