South Korea and the United States are set to launch a joint working group this week aimed at improving the US visa system for South Korean workers, Yonhap News Agency reported. The move comes in response to the recent detention of more than 300 Korean nationals during a US immigration raid in Georgia, diplomatic sources said Sunday.

The first meeting of the new working group will take place in Washington on Tuesday, just weeks after the high-profile raid on a factory construction site that drew international attention, as per Yonhap News Agency. The detained workers were held for about a week over what officials described as unclear visa violations before being released following diplomatic negotiations between Seoul and Washington.