Just three months after the State Department announced it would “aggressively revoke” visas for Chinese students, President Donald Trump reversed course Monday, promising to more than double the number of student visas given to Chinese nationals to 600,000. The administration was right the first time. There are far too many students on college campuses dedicated to undermining U.S. national security, and the federal government should focus on cutting higher education’s dependence on foreign nationals, not making it worse.

Responding to questions about trade talks with China during a Monday Oval Office meeting with South Korean President Lee Jae Myung, Trump said it was “very important” to admit more Chinese students, as many as 600,000, which is more than double the 277,000 in the country now.