When the Coronavirus entered most Americans’ radars, the deadly pandemic was largely contained to China. To try to keep the virus from entering America, President Trump on January 31st announced a ban on travel from China to the U.S. The move was almost reflexively panned as “racist,” “xenophobic,” and not in line with science. More than a month and a half later, it’s now widely acknowledged that limiting travel from “cluster” regions is one of the only ways to slow the virus’ rapid spread, and that this travel ban helped the United States gain time to prepare its defenses. Americans...