The surprise order from the Trump administration imposing a new $100,000 fee on some visas set off a day of frantic travel as workers, companies and foreign governments scrambled to respond to Washington's latest immigration crackdown.By the time the White House clarified that existing holders of the H-1B visas for skilled workers were not affected, the chaos had already been sewn: U.S. allies expressed concern and their nationals abandoned holidays, business trips and plans to see their families as they raced back to America before the new rules took effect Sunday.