US President Donald Trump waves leaves 10 Downing Street to make his way to the Foreign and Commonwealth office for a press conference in London on June 4, 2019, on the second day of his three-day State Visit to the UK. - US President Donald Trump turns from pomp and ceremony to politics and business on Tuesday as he meets Prime Minister Theresa May on the second day of a state visit expected to be accompanied by mass protests. (Photo by Daniel LEAL-OLIVAS / AFP)