America refuses visa to North Korean high official.
After his election, Trump cancelled first talks
between U.S. and North Korea.
According to the Wall Street Journal, Choe Son Hui should originally start talks with a U.S. official in New York on 1st and 2nd of March . This is what Trump at first announced as a planned contact between North Korean and U.S. officials after [Trump's] election as a president of the United States. This would have been as well the first announced visit to America of a high-ranking North Korean special envoy since 2011.
[Source: Sina News 新浪新闻中心 on February 26, 2017]