This one just makes me laugh.Josh Marshall, Editor of the left-wing “Talking Points Memo,” writes, “A year ago, no one took seriously the idea that a federal health care mandate was unconstitutional.”Maybe on the left, but on the right it was a fundamental argument. In fact, just before Christmas one year ago, the Senate Republicans voted unanimously that the individual mandate was, in fact, unconstitutional.Getting outside the echo chamber sometimes helps put things in perspective.Consider this an open thread.