WASHINGTON—The Trump administration is considering slashing the number of refugees it allows to come to the U.S. next year by as much as 44% as it looks to tighten its immigration crackdown, a senior administration official said.

The plan under discussion seeks to cap the number of refugees granted resettlement in the U.S. in 2019 to 25,000 people, the official said. President Trump has already reduced the number of refugees allowed in since taking office. This year the limit is 45,000, low by historical standards.

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