US Customs vows to block imports made by North Korea workers

In this Sept. 5, 2017, photo, North Korean workers gather after lunch at the Hong Chao Zhi Yi garment factory in Hunchun in northeastern China’s Jilin province. At a time when North Korea faces sanctions on many exports, it sends of tens of thousands of workers worldwide bringing in revenue estimated at anywhere from $200 million to $500 million. That could account for a sizable portion of North Korea’s nuclear weapons and missile programs, which South Korea says have cost more than $1 billion. (AP Photo/Ng Han Guan)