US President Donald Trump on Friday signed a proclamation to raise the fee for H-1B visa applications to $100,000.

The visa program is meant for highly skilled workers to lawfully work in the US and companies have often relied on the program to attract workers for roles difficult to fill with qualified US citizens and permanent residents.

US tech companies have routinely used the visa program to bring in workers, with India and China having so far accounted for the biggest beneficiaries of the program.

Employers typically pay the fee and the new visa fee is to be paid on top of the current visa fee, which is more moderate.

Hiking up the fee opens a new front in the Trump administration's crackdown on immigration, legal or otherwise.

Trump administration cracks down on H-1Bs

Commerce Secretary Howard Lutnick said the new fee will prevent companies from training workers and encourage them to hire Americans.

"A hundred thousand dollars a year for H1-B visas, and all of the big companies are on board. We've spoken to them," US Commerce Secretary Howard Lutnick said.

"If you're going to train somebody, you're going to train one of the recent graduates from one of the great universities across our land. Train Americans. Stop bringing in people to take our jobs," he said.

"We need workers. We need great workers, and this pretty much ensures that that’s what’s going to happen," US President Donald Trump said from the Oval Office.

- DW