Which US president boycotted the Olympics?

The US president who ordered a boycott of the Olympics was President Jimmy Carter, who ordered a boycott of the 1980 Summer Olympics held in Moscow, Soviet Union. The boycott was in response to the Soviet Union's invasion of Afghanistan in December 1979. President Carter demanded that the Soviets withdraw troops from Afghanistan and gave them a deadline, and when they did not comply, he announced on March 21, 1980 that the United States would not participate in the Moscow Games if Soviet troops remained. The US Olympic Committee, under pressure from the White House and Congress, voted to support the boycott, and 65 other countries and regions joined the US in not attending or partially boycotting, including West Germany, Japan, Canada, and China. The Soviet Union and 14 of its allies retaliated by boycotting the 1984 Los Angeles Summer Olympics four years later. President Carter's decision was controversial because it punished American athletes who had trained for years, with 466 US athletes qualifying but unable to compete, though they were later given Congressional Gold Medals. No other US president has ordered a full Olympic boycott, though President Joe Biden ordered a diplomatic boycott of the 2022 Beijing Winter Olympics, meaning no official US delegation attended, but athletes did compete.