President Obama has persuasively explained why Medicare Advantage costs more money to the government without providing a superior service. John McCain interjected to ask why, then, Florida seniors should get a special break to keep their Medicare Advantage. Obama replied that it's a legitimate point.

Of course, the Florida break was inserted by Democratic Senator Bill Nelson. It's going to be awfully hard to keep that in now that Obama has agreed with McCain that it's unjustifiable.