By Ju-min Park and Hyunjoo Jin

SEOUL (Reuters) -South Korean Foreign Minister Cho Hyun will head to the U.S. on Monday as he seeks to resolve the fallout over the detention of hundreds of Korean workers during an immigration raid at a time when Seoul has committed to massive investment plans in America.

Seoul said on Sunday that negotiations to arrange the release of about 300 Korean workers arrested at a Georgia battery plant being built by Hyundai Motor and LG Energy Solution had concluded and a plan is in the works to fly them home this week.

The detention of the workers by the Department of Homeland Security agents sent shockwaves through South Korea, a major U.S. ally which has been trying to finalise a U.S. trade deal agreed in late July. It came just 10 days after South Korea’s n

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