Title: United States at the Olympics
Content:   U.S. athletes have appeared in every Summer Olympics of the modern era. The United States, represented by the United States Olympic & Paralympic Committee (USOPC), competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place in the summer of 2020, the Games were postponed to July 23 to August 8, 2021, due to the COVID-19 pandemic. The opening ceremony flag-bearers for the United States were baseball player Eddy Alvarez and basketball player Sue Bird. Javelin thrower Kara Winger was the flag-bearer for the closing ceremony. When USA Gymnastics announced that 2016 Olympic all-around champion Biles would not participate in the gymnastics all-around final, the spotlight fell on her American team-mates. The U.S. had won the event in each of the last five Olympic Games: a formidable winning streak was on the line. Sunisa Lee embraced the moment and stood tall to deliver for her 
Title: United States at the Summer Olympics
Content:  The United States of America has sent athletes to every celebration of the modern Summer Olympic Games with the exception of the 1980 Summer Olympics, during which it led a boycott. The United States Olympic & Paralympic Committee (USOPC) is the National Olympic Committee for the United States.
Title: United States at the Summer Olympics
Content:  medals in track and field, their most successful sport. US basketball team won its third consecutive gold, twice defeating the Soviets in the process, American boxers won all five finals they entered, and American weightlifters edged their Soviet rivals 4 to 3 in terms of gold medals, with the two nations sweeping all seven events in the sport. Melbourne hosted the Olympics in 1956. There were calls for the expulsion of the Soviet Union following their invasion of Hungary, but the International Olympic Committee decided not to pursue any action. As a result, some nations boycotted the games in protest of the 
Title: United States at the Olympics
Content:  athletes won 31 medals in track and field, their most successful sport. US basketball team won its third consecutive gold, twice defeating the Soviets in the process, American boxers won all five finals they entered, and American weightlifters edged their Soviet rivals 4 to 3 in terms of gold medals, with the two nations sweeping all seven events in the sport. Melbourne hosted the Olympics in 1956. There were calls for the expulsion of the Soviet Union following their invasion of Hungary, but the International Olympic Committee decided not to pursue any action. As a result, some nations boycotted the games 
Title: United States at the Olympics
Content:  The United States of America (USA) has sent athletes to every celebration of the modern Olympic Games with the exception of the 1980 Summer Olympics, during which it led a boycott to protest the Soviet invasion of Afghanistan. The United States Olympic & Paralympic Committee (USOPC) is the National Olympic Committee for the United States. American athletes have won a total of 2,673 medals (1,075 of them gold) at the Summer Olympic Games and another 307 (105 of them gold) at the Winter Olympic Games, making the United States the most prolific medal-winning nation in the history of the Olympics. The US is ranked first in the all-time medal table even if all the incarnations of Russia and Germany are combined, leading the second-placed Russians by 429 gold and 981 total medals, despite being the only team in the world to receive no government funding.
Title: United States at the 2020 Summer Olympics
Content:  The United States, represented by the United States Olympic & Paralympic Committee (USOPC), competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place in the summer of 2020, the Games were postponed to July 23 to August 8, 2021, due to the COVID-19 pandemic. U.S. athletes have appeared in every Summer Olympics of the modern era, with the exception of the 1980 Summer Olympics in Moscow, which the U.S. boycotted in protest of the Soviet invasion of Afghanistan. The opening ceremony flag-bearers for the United States were baseball player Eddy Alvarez and basketball player Sue Bird. Javelin thrower Kara Winger was the flag-bearer for the closing ceremony. The country finished 
Title: United States at the Olympics
Content:  (83), buoyed by the Soviet-led boycott. Coincident with a drive by the IOC toward gender parity beginning in the 1990s, the U.S.’s fortunes improved, and the nation topped the medal table in the Summer Olympics six times since 1992 and placed second on two occasions. In contrast to its Summer Olympics status, the United States was not a power in the Winter Games until the 2002 Olympics in Salt Lake City. Hosting the games in 2002 boosted the U.S. winter sports program; since then, the country’s athletes have performed consistently well, never placing below fourth in the medal count. The nation won the most medals (37) at the 2010 Winter Olympics in Vancouver but dropped to 23 medals at the most recent 2018 games in Pyeongchang. 
Title: United States at the 2016 Summer Olympics
Content:  The United States, represented by the United States Olympic Committee (USOC), competed at the 2016 Summer Olympics in Rio de Janeiro, from August 5 to 21, 2016. U.S. athletes have appeared in every Summer Olympics of the modern era, with the exception of the 1980 Summer Olympics in Moscow, which they boycotted in protest of the Soviet–Afghan War. For the second consecutive time in the Summer Olympics, the United States was represented by more female than male athletes (264 men and 291 women). The 2016 Olympics were the third most successful for the United States as far as the medal count (121) and the most successful not held in the United States: St. Louis had 239 total medals won in 1904, and Los Angeles had 174 in 1984. These Games also witnessed the thousandth Summer Olympic gold medal for the Americans.
Title: United States at the Olympics
Content:  approach to international sport focused on projecting socio-political superiority. The rapid rise of the Soviet Union to challenge the United States as a leading Olympic power raised questions and suspicion about the means used to achieve this, including the pretense of professional athletes having amateur status and allegations of state-sponsored doping. After 20 years of competition on the Olympic stage, the USSR convincingly topped the medal chart at the 1972 Summer Olympics in Munich. After that, the U.S. would not top the medal table in a non-boycotted games until the 1996 Summer Olympics, five years after the USSR collapsed. A bright spot for the United States was the 1984 games in Los Angeles, where the U.S. set a record for most gold medals won in a single 
Title: United States at the Olympics
Content:  medals the Americans win in their signature sports. Unfortunately for the US, the Soviet strategy worked, and the gap between the USSR and US widened every four years until the collapse of the Soviet Union. In 1972, the Soviets won 50 gold and 99 total medals to the Americans' 33 and 94; in 1976, the USSR amassed 49 gold and 125 total medals to the Americans' 34 and 94; 1980 Olympics were boycotted by the US and its allies, the Soviets retaliated in 1984 by boycotting the LA Olympics together with their satellites; finally, in 1988, the USSR won 55 gold 

Question: when did the us not go to the olympics?
Answer: The 1980 Summer Olympics.
1980.