The U.S. has an obligation to allow foreign diplomats into the country to attend sessions of the United Nations
We have comments by Venezuelan Foreign Minister Jorge Arreaza, talking with the press in New York at the United Nations. He refers to the denial of a visa to Iranian Foreign Minister Mohammad Javad Zarif... who has been refused entry into the U.S. to address the UN Security Council later this week. The U.S. has an obligation to allow foreign diplomats into the country to attend sessions of the United Nations.