President Barack Obama, who invoked his own Christian faith recently in seeking to quell anti-Muslim sentiment in the United States, attended church in Washington on Sunday for the first time in about five months. Obama and his family strolled a block from the White House to St. John's Episcopal Church, a place of worship for many of his predecessors, for an hour-long service. It was one of just a handful of times Obama has gone to church in Washington since taking office in January 2009, and follows opinion polls showing that as many as one in five Americans falsely believe...