By Nora Eckert

DETROIT (Reuters) -The head of LG Energy Solution’s North American business said on Tuesday the battery maker is hopeful about negotiations around visas for its workers following a massive raid on its joint-venture plant with Hyundai in Georgia.

“We’re cautiously optimistic that this type of thing will not happen again,” said Robert Lee, president for LG Energy Solution in North America.

The raid earlier this month by U.S. authorities led to the arrest of about 475 workers, and set the battery plant at the site back at least two to three months, Hyundai’s CEO said last week. Many of those workers returned to Korea last week.

“We feel really bad for all of our workers as well as our subcontractors who came here on business to install equipment and they were detained,” Lee

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