India’s largest technology companies plan a trip to Washington this month to argue against President Donald Trump’s envisioned tightening of visa programs that Silicon Valley and their own industry rely on to attract talent. The chief executives of the country’s biggest IT services companies will meet with administration officials and lawmakers from Feb. 20 to try and dissuade Trump’s team from raising requirements under the H-1B visa program, said R Chandrashekhar, the president of industry group Nasscom.