After President Donald Trump on Friday took moves to reshape the H-1B visa program , a White House official is clarifying some of the details.

Here’s what to know about the work visas, and how Trump’s proclamation could affect thousands of workers:

What is an H-1B visa?

Big picture view:

The H-1b visa is a non-immigrant work visa that lets U.S. employers hire foreign workers with particular skills for a specific time. These visas are created for people who are in industries that require a bachelor’s degree or higher. Typically, the jobs are in fields like technology, finance, engineering, and architecture, according to the American Immigration Council .

By the numbers:

Historically, H-1B visas have been doled out through lottery. This year, Amazon was by far the top reci

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