FILE - In this Saturday, July 8, 2017, file photo, U.S. President Donald Trump, left, and Chinese President Xi Jinping arrive for a meeting on the sidelines of the G-20 Summit in Hamburg, Germany. The United States apologized for mistakenly describing Xi as the leader of Taiwan, China said Monday, July 10, 2017. Chinese scholars said the mistake shows a lack of competence in the White House that is not conducive to healthy U.S.-China relations. (Saul Loeb/Pool Photo via AP, File)