President Donald Trump, pumps his fist as he walks across the South Lawn of the White House in Washington with l-r., first lady Melania Trump, son Barron and Amalija Knavs, mother of first lady Melania Trump, before boarding Marine One helicopter, Friday, June 29, 2018, for the short flight to nearby Andrews Air Force Base, Md. (AP Photo/Pablo Martinez Monsivais)