Top Obama adviser Dan Pfeiffer to step down: White House

U.S. President Barack Obama's top communications adviser and a longtime member of his inner circle, Dan Pfeiffer, is stepping down from his post in March, the White House said on Wednesday. Pfeiffer has advised Obama since the 2008 presidential campaign and is one of the last of the president's close confidants from that period to be leaving his immediate orbit. "Like everyone else in the White House, I’ve benefited from his political savvy and his advocacy for working people,&q