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BBC
The Trump administration has moved to end Harvard's ability to enrol international students, escalating a row with America's oldest university.
Homeland Security Secretary Kristi Noem wrote on X that the administration has revoked Harvard's "Student and Exchange Visitor Program certification as a result of their failure to adhere to the law."
"Let this serve as a warning to all universities and academic institutions across the country," she wrote.
Harvard called the move "unlawful" in a statement.
Nearly 7,000 international students were enrolled at the institution last academic year, university data shows, making up 27.2% of its student body.
Harvard did not immediately respond to a request for comment.
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