Panic, confusion, and anger reigned as workers on H-1B visas from India and China were forced to abandon travel plans and rush back to the US after President Donald Trump imposed new visa fees, in line with his wide-ranging immigration crackdown. Tech companies and banks sent urgent memos to employees, advising them to return before a deadline of 12:01am US Eastern Time Sunday (4:01am GMT), and telling them not to leave the country. A White House official on Saturday clarified that the order applied only to new applicants and not holders of existing visas or those seeking renewals, addressing some of the confusion over who would be affected by the order. But Trump's proclamation a day before had already set...