On Tuesday, President Obama strode into the White House Briefing Room, surprising the reporters there. He had just held the first of a new string of meetings — a bipartisan gathering involving congressional leaders from both parties (the big one, on health care, is set for February 25). This is a good effort, but it comes a year late. Obama came into office promising to end the politics of division. A year later, it seems we have more division and less collaboration.