U.S. President Donald Trump's administration on Wednesday vowed to "aggressively" revoke visas of Chinese students, one of the largest sources of revenue for American universities, in his latest broadside against U.S. higher education.

The announcement by Secretary of State Marco Rubio marked a show of defiance after China criticized his decision a day earlier to suspend visa appointments for students worldwide at least temporarily.

The Trump administration has already sought to end permission for all international students at Harvard University, which has rebuffed pressure from the president related to student protests.

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