President Donald Trump is facing calls from business leaders to "turn the page" on his immigration crackdown after a raid at a Hyundai plant in the US state of Georgia.

It was the largest such raid in US immigration history, sweeping up 475 workers, including about 300 people from South Korea.

The decision to target the project, backed by a company the president has celebrated for putting money and factories in the US, sparked shock and outrage in South Korea, where politicians and business leaders have warned it will chill willingness to invest in the US.

In the US, business groups said the raid was likely to hit local business activity as well, as it scares off key parts of the workforce.

"Those actions are having ripple and ancillary effects on others, real and unintended, unfortunately whether they're in legal status or not," said Jeff Wasden, president of State Business Executives, which represents state lobby groups from businesses across the economy.