Reagan's phone call with Nixon.

In October 1971, the United Nations voted to recognize the People’s Republic of China. Reagan, then the governor of California, despised the U.N, which he described as a “kangaroo court”, The Atlantic reported. When China was voted in, the Tanzanian delegation started dancing in the General Assembly. Reagan phoned President Richard Nixon at the White House and vented about the delegates who had sided against the U.S. Source: HERE