Rep. Barney Frank (D-Mass.) thinks that President-elect Obama picked same-sex marriage opponent Rick Warren to give the inauguration invocation because Obama "overestimates" his ability to unify people. "Oh, I believe that he overestimates his ability to get people to put aside fundamental differences," said Frank, the first House member to come out of the closet voluntarily. Frank, on MSNBC on Monday, said that he's delighted Obama was elected and that the country is headed into the "best time" for public policy since the New Deal. "But my one question is, I think he overestimates his ability to take people, particularly...