Facebook vulnerable to expected changes in key visa program

By Stephen Nellis and Mica Rosenberg SAN FRANCISCO/ WASHINGTON (Reuters) - Among Silicon Valley’s top tech employers, Facebook Inc could be the most vulnerable to U.S. President Donald Trump’s expected crackdown on guest-worker visas, according to a Reuters analysis of U.S. Labor Department filings. More than 15 percent of Facebook's U.S. employees in 2016 used a temporary work visa, giving the social media leader a legal classification as a H-1B “dependent” company.