We should be near a breakthrough on the question of how the COVID-19 pandemic began. The Wall Street Journal recently reported that U.S. officials have identified three researchers at the Wuhan Institute of Virology who were sickened with a mysterious illness in November 2019. One of these researchers, Ben Hu, is reported to have studied bat coronaviruses, and reportedly did work on how they infect humans. (Hu denies having been ill.) And over in the U.K., the Sunday Times reports that State Department investigators who scrutinized "top-secret intercepted communications and scientific research" concluded that "Chinese scientists were running a covert...