The day before John McCain's third domestic policy speech in as many weeks, his senior policy adviser sat down with reporters in Tampa, Fla., to preview McCain's health care proposals and try once again to dispel the persistent storyline that McCain's success in November hinges on Iraq. Health care isn't exactly a bread-and-butter topic for the presumptive Republican nominee. While campaigning in Iowa last December on his support for the surge, McCain told a reporter from the Boston Globe, "The issue of economics is not something I've understood as well as I should." Whether or not that now-infamous quote was...