The Trump administration said current foreign students must transfer or risk losing their legal status. Advocates say the directive violates legal procedures.

U.S. President Donald Trump's administration has revoked Harvard University's ability to enroll international students, and will force existing students to transfer to other schools or lose their legal status,

The latest Trump administration action could compel more than a quarter of Harvard's student body, all of whom are in the US legally, to transfer schools or leave the country.