President Donald Trump's administration moved Thursday to impose stricter limits on how long foreign students and journalists can stay in the United States, the latest bid to tighten legal immigration in the country.

Under a proposed change, foreigners would not be allowed to stay for more than four years on student visas in the United States.

Foreign journalists would be limited to stays of just 240 days, although they could apply to extend by additional 240-day periods.

The United States, until now, has generally issued visas for the duration of a student's educational program or a journalist's assignment, although no non-immigrant visas are valid for more than 10 years.

The proposed changes were published in the Federal Register, initiating a short period for public comment before i

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