 In December 1950, the United States initiated economic sanctions against the DPRK under the Trading with the Enemy Act, which lasted until 2008.North Koreans had their closest encounter with the United States during the US/UN occupation of North Korea in the two months after the Inchon landing.With help from the ROK Army, the United States' military, under the command of General Douglas MacArthur, moved to set up a civil administration for North Korea in the wake of the presumed defeat of North Korea.