sentences:  Kim Sang-duk, who also worked for the university, had been arrested on similar charges on April 22.They both were released on May 8, 2018, into U.S. Secretary of State Mike Pompeo's custody after overtures were made for a meeting to be held between President Donald Trump and Supreme Leader Kim Jong-un in June 2018.Due to a ban on Americans travelling to North Korea issued by the U.S. State Department in mid-July in 2017, the university had to start the fall semester without its dozens of American staffers in September, who comprised roughly 60 out of 130 foreigners at the university, including faculty members, staffers and family members, as none of them received special permission to stay.