Tom Homan vows future raids like one at Hyundai plant, warns companies against illegal hiring

"The short answer is yes," Homan said. "We're going to do more worksite enforcement operations because number one, it's a crime to enter this country illegally. Number two, it's a crime to knowingly hire an illegal alien, and these companies that hire illegal aliens, they undercut the competition that's paying U.S. citizen salaries."

"Look, no one hires illegal aliens on the goodness of their heart. They hire them because they work them harder, pay them less, and undercut the competition," Homan added. 

Hyundai owns the plant, but the company said none of the detained workers were directly employed by the company.

President Lee Jae Myung's office says the country will send a charter plane to bring the workers back to South Korea in the coming days.

Homan said he had personal experience with how illegal immigration puts Americans out of work and drives down salaries for U.S. employees. When he was replacing his roof, he had to make numerous inquiries before finding a company that could guarantee a legal workforce.

"I talked to one company, just a father and son, who laid off 20 citizen employees because they couldn't win a bid. The competition were bidding a lot less for a job because they were paying employees a lot less to work because they're illegally in the United States," Homan said. 

Homan added the administration's workplace raids have contributed to the country having the "most secure" border in history.

Fox New Digital's Anders Hagstrom contributed to this report.