President Biden’s decision to withhold U.S. diplomatic participation from the 2022 Beijing Olympics, while allowing athletes to take part, confronts America’s pole-vaulters and shot-putters with a familiar moral dilemma: Should sports and politics mix? It’s a shame that the president has decided to limit his response to Chinese human rights abuses to such a halfway measure. After all, the diplomatic ceremonies that take place at the Olympics are the least important parts of the event; it’s the athletic competition that matters. Permitting the American athletes to go to China will undercut the power of the Biden administration’s diplomatic gesture. Now...