In-Depth: Omicron made some COVID drugs obsolete. Why can't the US share them?

Clinics and hospitals across California are storing COVID-19 antivirals that are ineffective against omicron and no longer authorized for use anywhere in the U.S. These life-saving monoclonal antibodies would be welcome relief in the corners of the world still contending with variants other than omicron, but U.S. health providers are barred from sharing them.