Democratic National Committee Chair Debbie Wasserman-Schultz seemed to either struggle to answer or evade questions about President Obama's activity on the campaign trail during a Thursday interview with Bloomberg TV's With All Due Respect. As hosts John Heilemann and Mark Halperin asked her about DNC deployment of popular former President Bill Clinton to assist Democratic Senate candidates while an increasingly unpopular Obama stayed home, Wasserman-Schultz just kept saying "the president has been campaigning in competitive races," but would not name any of the competitive Senate races in question...