The Trump administration is warning Harvard University that it could take over its patents, worth hundreds of millions of dollars, if a review finds the university hasn’t complied with federal law, an escalation of the ongoing negotiations between the White House and America’s oldest university.

The Trump administration threatened to assume ownership of hundreds of millions of dollars worth of patents from Harvard University, accusing the Ivy League college of failing to comply with the law on federal research grants.

The administration doubled down against Harvard, asserting that rising violent crime on campus meant the school should not host international students. It will also review the school’s patents.