Credit where credit is due: The Biden administration’s decision to end the ban on travel by non-citizens/permanent residents from the European Schengen area, Ireland, the United Kingdom, China, India, Brazil, Iran, and South Africa is a very good one.

As I suggested in a recent blog post, the administration will replace this flat-out ban with a vaccine and testing requirement that will presumably start applying when the current restrictions end, in November. Unlike the previous regime, this system is coherent and defensible on public-health grounds, as it facilitates entry by low-risk travelers over entry by higher-risk travelers.