Update to United States Visa Waiver Program for travelers to the DPRK
On August 5, 2019, the U.S. Visa Waiver Program (VWP) which uses the Electronic System for Travel Authorisation (ESTA) was updated to restrict eligibility for foreigners who have visited the DPRK on or after March 1, 2011.
Foreign nationals of the 38 countries eligible for visa-free travel to the United States under this program, who have visited the DPRK since this date, will now be required to apply for a visa at U.S. embassies or consulates.
The U.S. Department of State has stated that this change does not ban travel to the United States or admission into the United States.
The formal requirements of the VWP can be found here: https://www.cbp.gov/travel/international-visitors/visa-waiver-program