President Trump’s recent crackdown on immigration has brought an ongoing debate back into the spotlight: the future of the H-1B visa program. This initiative allows skilled foreign workers, like software engineers, to work in the U.S., but it’s causing a rift among Trump’s staunchest supporters.

On one side, immigration hard-liners are pushing for stricter limits on foreign labor. On the other, big names in the tech industry—many of whom back Trump—are defending the program, arguing they can’t find enough qualified American workers to fill specialized roles. Elon Musk, for instance, has publicly backed H-1B, saying the skills needed “just aren’t available in the U.S. in large enough numbers.”

So, how does the H-1B program actually work? Established in 1990, it was designed to address labor shortages by bringing in highly skilled professionals like scientists and engineers. Employers can sponsor foreign workers for these visas, which last up to three years and can be extended. To apply, companies must prove they couldn’t find qualified U.S. workers for the position.

What’s unclear is where Trump stands. While he once vowed to end the program, he recently called it “a great initiative.” With the tech industry and immigration proponents at odds, the future of H-1B remains up in the air.

As the debate unfolds, one thing’s certain: the outcome could have big implications for both the U.S. workforce and the tech sector’s ability to stay competitive.