President Moon’s Plane was Blacklisted by the US

Via a reader tip comes news that President Moon’s official aircraft was blacklisted by the US for traveling to North Korea: 

President Moon Jae-in’s official airplane has been blacklisted by the U.S. because it had flown him to North Korea, it emerged Wednesday. The official plane even had to be cleared for a visit to the U.S. in September after it was slapped with a 180-day ban. 
One diplomatic source said, “A blacklisted plane can only travel to the U.S. by special permission.” 
U.S. President Donald Trump signed an executive order in September 2017 that bans all aircraft that traveled to North Korea from entering the U.S. for 180 days. But exceptions can be made. 
A U.S. government official confirmed that Moon’s plane had to receive authorization even when Moon went to New York on Sept. 24 to attend the UN General Assembly and meet Trump.

Chosun Ilbo

You can read more at the link, but by getting the rail and roads connected with North Korea like President Moon has been pushing hard to do, he can avoid the aircraft blacklisting problem.