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 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.

The Trump administration is opening a new front in its battle with Harvard University on the issue of patents, marking a new escalation with the elite school that could result in the loss of additional federal funding or intellectual property rights.