Journalists, aid workers and individuals heading to North Korea to represent U.S. national interests will be exempt from an upcoming travel ban, according to a preview of a notice set for publication tomorrow in the Federal Register.

The restriction on travel is set to begin on September 1,  30 days after its publication, and will declare U.S. passports invalid for travel to North Korea unless they qualify for an exemption.

“The Department of State has determined that the serious risk to United States nationals of arrest and long-term detention represents imminent danger to the physical safety of United States nationals