WASHINGTON (AP) — The efforts by President Donald Trump's administration to prevent Harvard University from enrolling international students have struck at the core of the Ivy League school's identity and unsettled current and prospect students around the world.

Last month, the government told Harvard's thousands of current foreign students that they must transfer to other schools or they will lose their legal permission to be in the U.S. A federal court in Boston last week blocked the Department of Homeland Security from barring international students at Harvard.

On Wednesday, Trump signed an executive order invoking a different legal authority to keep Harvard's international students from entering the United States.

Trump has targeted Harvard's international enrollment as it presses t

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