President Donald Trump’s MAGA-opposed effort to dole out 600,000 visas to Chinese students could face increased opposition now that a key immigration hawk is warning that Beijing often uses those to deploy spies that cost America up to $600 billion a year.

The Federation for American Immigration Reform issued a new report on Wednesday that detailed how legal and illegal Chinese immigrants who flooded into the United States during the Biden administration have spied on U.S. national security agencies and corporate offices.