Mitt Romney is not the only one with a flip-flop issue when it comes to health care. As a new video by the Republican Super PAC American Crossroads vividly reminds us, Barack Obama strongly opposed the idea of forcing people to buy health insurance (the so-called individual mandate at the center of this week's Supreme Court case) when it was proposed by Hillary Clinton in the 2008 Democratic primary.

It is one of the political oddities of the health care debate that the battle over the individual mandate - the aspect of the health care law most hated by tea partiers - was strenuously opposed by candidate Obama and long supported by conservatives ranging from Newt Gingrich and the Heritage Foundation to Mitt Romney.