SEOUL, Sept 6 (Reuters) - South Korean President Lee Jae

Myung ordered all-out efforts on Saturday to respond to the

arrests of hundreds of the nation's citizens in a U.S.

immigration raid on a Hyundai Motor ( HYMLF ) car battery

factory.

Foreign Minister Cho Hyun said the government has set up a

team to respond to Thursday's arrest of over 300 Koreans at the

facility in the southern state of Georgia and that he may go to

Washington to meet with officials if needed.

"I am deeply concerned. I feel heavy responsibility for the

arrests of our citizens," Cho told an emergency government

meeting.

The arrest of some 475 workers at the plant near Savannah,

part of President Donald Trump's escalating crackdown on

immigrants, was the largest single-site enforcement operation in

the U.S. Department of Homeland Security's history.

The incident could exacerbate tensions between the Trump

administration and Seoul, a key Asian ally and investor in the

U.S. They have been at odds over the details of a trade deal

that includes $350 billion of South Korean investment in the

United States.

LG Energy Solution, which is working with

Hyundai to build the factory, said it had asked employees to

return from U.S. business trips while suspending travel to the

United States except for customer meetings.

LG Energy Solution said 47 of its employees and about 250

workers for contractors at the joint venture factory were

detained.