The Department of State will no longer offer visa-free access to the United States for foreigners who have previously traveled to North Korea, an updated regulation introduced on Tuesday showed.

Based on 2015-era legislation, the development will complicate travel eligibility to the U.S. for tens of thousands of people worldwide, create new obstacles for an already under-pressure North Korea travel industry, and likely add a hurdle for even some of the richest South Koreans worldwide.

But while the new rules will cast a long-term shadow over the prospect of inter-Korean tourism, it will for now make little economic impact on