South Korean workers detained by U.S. Immigration and Custom Enforcement (ICE) returned home Friday, after law enforcement raided a Georgia plant in search of illegal immigrants.

Hundreds of employees landed at Incheon International Airport in Seoul, greeted by family, friends and protesters with signs opposing the Trump administration, according to The Associated Press. 

South Korean nationals were shackled and handcuffed by ICE agents while working to develop a $7.6 billion factory set to produce items for Hyundai and LG Energy Solution (LGES). 

Some of them were working under visas that lapsed to construct the facility, which was previously set to open later this year. After the Sept. 4 raid, officials said the project could be prolonged by three to four months.

"We're in an age of new normal in dealing with the United States," Presidential Chief of Staff Kang Hoon-sik told reporters, Reuters reported.

"The standard changes every time and constantly there has to be deal-making, not only on tariffs, but it'll also be the case with security issues," he said.

South Korean President Lee Jae Myung said the “innocent people” from his country were adversely impacted by the raid, while workers shared fears about taking future job opportunities within the United States.

"Nobody is going to stay and work when it's like this," Jang Young-seol, an engineer for an LGES subcontractor, told Reuters.