At the beginning of Tuesday's White House briefing, spokesman Sean Spicer listed everything Donald Trump has done since he became president five days ago. The long list includes various meetings with business, union and congressional leaders and the signing of executive orders intended to boost the U.S. economy and job market. But for some White House correspondents, the only thing that mattered on Tuesday was not what Trump has accomplished so far, but his offhand remark at a private reception for lawmakers Monday night, where Trump apparently repeated his belief that between three million and five million votes had been...