South Korea's Foreign Minister, Cho Hyun, has urged the US Congress to support a new visa for Korean businesses as hundreds of South Korean workers arrested during an immigration raid at a Hyundai battery factory in Georgia are heading home. The workers, who were detained by US Immigration and Customs Enforcement for a week, have been released and flown back to South Korea. The raid has threatened to destabilize ties between the two countries, which are seeking to finalize a trade deal, and may also scare off South Korean investment in the US. As a result, Hyundai's battery plant is facing a minimum startup delay of two to three months, according to CEO Jose Munoz.