Ever since November 2007, I have both enjoyed and caviled at Andrew Sullivan's heroic chronicles of the Obama presidency, which started as prophecy in November 2007. That's the case with his latest Newsweek cover, which makes a pretty strong case that if re-elected Obama will have the chance to fulfill his stated ambition of being a "transformative" president in the Reagan mold --one who "changes the trajectory" of American politics, as he famously/infamously