Sotomayor has diabetes, a condition that puts her at high risk for serious illness, or even death, from COVID-19. She has been the only justice to wear a mask on the bench since last fall when, amid a marked decline in COVID-19 cases, the justices resumed in-person arguments for the first time since the onset of the pandemic.

Now, though, the situation had changed with the omicron surge, and according to court sources, Sotomayor did not feel safe in close proximity to people who were unmasked. Chief Justice John Roberts, understanding that, in some form asked the other justices to mask up.

They all did. Except Gorsuch, who, as it happens, sits next to Sotomayor on the bench. His continued refusal since then has also meant that Sotomayor has not attended the justices’ weekly conference in person, joining instead by telephone.