EXPLAINER: What does an Olympic diplomatic boycott achieve?

FILE - A crew member leaps to fix a logo for the 2022 Beijing Winter Olympics before a launch ceremony to reveal the motto for the Winter Olympics and Paralympics in Beijing on Sept. 17, 2021. The Beijing Winter Olympics open in just under two months and are now the target to a diplomatic boycott by the United States with others likely to follow. (AP Photo/Mark Schiefelbein, File)

In this grab taken from video, Britain's Prime Minister Boris Johnson speaks during Prime Minister's Questions in the House of Commons, London, Wednesday, Dec. 8, 2021. Johnson says no U.K. government minister will attend the Beijing Olympics. Johnson on Wednesday called it “effectively” a diplomatic boycott. Johnson was asked in the House of Commons whether the U.K. will join the United States, Australia and Lithuania in a diplomatic boycott of the Winter Games. (House of Commons/PA via AP)

Canadian Prime Minister Justin Trudeau announces Canada will join a diplomatic boycott of the Beijing Winter Olympics over human rights concerns in Ottawa, Ontario, Wednesday, Dec. 8, 2021. Looking on are Foreign Affairs Minister Melanie Joly, left, and Sport Minister Pascale St-Onge (Adrian Wyld/The Canadian Press via AP)