Students attend a nursing class during vocational training at the Infrastructure Leasing & Financial Services Institute of Skills in New Delhi. A global nurse-staffing agency and several unions sued over President Donald Trump’s plans to charge a $100,000 fee for H-1B visas that allow skilled immigrants to work in the US, saying the move is unlawful. Most Read from Bloomberg Trump signed a proclamation last month requiring the$100,000 payment for any new for H-1B visa application, claiming the program “ ...