What Is the H-1B Visa Program and Why Are Trump Backers Feuding Over It?

As President Trump embarked on a sweeping crackdown on immigration upon his return to office this week, he left unresolved a rift that surfaced last month among some of his most influential supporters about the role of skilled foreign workers in the U.S. labor market.

The split over the H-1B visa program, which allows skilled workers like software engineers to work in the United States, has pitted hard-line immigration opponents against some of Mr. Trump’s most prominent backers in the tech industry, who say they rely on the program because they can’t find enough qualified American workers.

It’s unclear where Mr. Trump will land. He pledged in his first term to discontinue H-1B visas, but last month he called it “a great program.”

Congress passed legislation creating the H-1B program in 1990, as a labor shortage loomed. When President George Bush signed it into law, he said the program would “encourage the immigration of exceptionally talented people, such as scientists, engineers and educators.”

Employers use the visas — which are valid for three years and can be extended — to hire foreign workers with specialized skills, mainly in science and technology, to fill openings for which American workers with similar abilities cannot be found.

Employers submit a petition to the government on behalf of a foreign worker they want to hire, describing the job and the qualifications of the person selected to fill it.