At Saturday night's debate in Des Moines, Rep. Michele Bachmann, former Speaker of the House Newt Gingrich, Rep. Ron Paul, Texas Gov. Rick Perry, former Mass. Gov. Mitt Romney and former Sen. Rick Santorum spent a considerable amount of time discussing the 2010 health law. Romney and Gingrich were both attacked for supporting the concept of a requirement to buy health insurance. In the debate's most talked-about moment, Romney offered to bet Perry $10,000 that what Perry was saying about Romney's book wasn't correct.