HARLINGEN, Texas (Border Report) -- A quarter of physicians in the United States are foreign born but new immigration policies threaten them from coming, according to the author of a new book.

On this episode of Border Report Live, Harvard University Associate Professor Eram Alam, author of the new book "The Care of Foreigners -- How Immigrant Physicians Changed US Healthcare," talks with South Texas correspondent Sandra Sanchez.

Alam writes that 1 in 4 physicians in the United States are foreign-born, and many from South Asia. They serve in rural and underserved U.S. communities, including many border towns.

These physicians "are shouldering the care" of many U.S. citizens in places that others won't work, she says.

By 2036, the United States could be short 86,000 physicians, she writ

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