Starting September first U.S. travelers will no longer be allowed to visit North Korea. Any Americans who are in North Korea between now and then will need to leave by that date as well.
Not following the new rules could result in “long-term detention” according to the U.S. State Department. Journalists and humanitarian aid workers will still be granted permission to go as long as they apply to and get approved for special dispensations from the U.S. government.
However, the more specific the approval for entry becomes the higher the suspicions could become as well. Being sent to the country for purely humanitarian reasons is unlikely.
An increase of strain between the two countries occurred after a U.S. student died after being detained in the country. There have also been threats of nuclear weapon use that the U.S. is not comfortable with.