On Sunday I spoke by video chat with my friend J.D. Scholten, who is running for Congress in Iowa's 4th district. J.D. is a retired baseball player who rose to national prominence in 2018, when he came within three points of unseating Steve King in what had until then been considered a safe Republican district. Sioux City, where J.D. lives, is just down the river from Sioux Falls, South Dakota, where nearly 650 workers have been diagnosed with COVID-19 at a Smithfield pork processing plant. I...