South Korean Foreign Minister Cho Hyun said Friday that the U.S. has assured that the South Korean workers who returned home following their detainment in Georgia will be able to travel to the U.S. for work in the future without any issues.

"We demanded that this incident should not cause any problems when these workers go back to the U.S. for work, and we received a clear assurance on that point from U.S. Secretary of State (Marco) Rubio, " Cho said in a briefing at the Incheon International Airport upon his arrival following his trip to Washington DC.

Cho said the two countries have also agreed to create a working group to resolve visa issues for South Koreans traveling to the U.S. to work for South Korean businesses and investment-related projects.

Earlier on Friday, more than 300 South Korean workers detained in an immigration raid in the United States last week were brought back home on a charter plane and reunited with their loved ones.

They were among about 475 people detained during the Sept. 4 immigration raid at a battery factory under construction on the campus of Hyundai’s sprawling auto plant west of Savannah.

Their roundup and the U.S. release of video showing some Korean workers shackled with chains around their hands, ankles and waists have caused public outrage and a sense of betrayal in South Korea, a key U.S. ally.

The plane carried 330 people who were detained in the Georgia raid — 316 of them are South Koreans, including a pregnant woman, and the rest are Chinese, Japanese and Indonesian workers. They had been held at an immigration detention center in Folkston, 285 miles (460 kilometers) southeast of Atlanta.

The battery plant, a joint venture between Hyundai and LG Energy Solution, is one of more than 20 major industrial sites that South Korean companies are currently building in the United States.

AP Video by Yong Ho Kim