The United States Department of Homeland Security (DHS) has threatened to revoke Harvard University’s ability to enroll foreign students if the instituition fails to comply with the President Donald Trump’s administration’s demand for information on some visa holders. DHS Secretary Kristi Noem on Wednesday announced the ultimatum alongside the termination of two grants totalling over $2.7 million. In a letter to Harvard, Noem cited “illegal and violent activities” reportedly linked to its foreign student visa holders, insisting the university provide the requested records by April 30. “And if Harvard cannot…