Visa difficulties provide cause for concern

In addition to the economic value, international students are a critical source of academic and research talent for colleges and universities in the United States.

Of the 54,664 doctorate recipients in 2017, more than 16,000 were non-US citizens, representing nearly 30 percent of the total.

This is according to the 2017 Doctorate Recipients from US Universities report published by the National Science Foundation in December. In physics, 25 percent of doctorates went to Chinese students alone, according to the foundation.