US Embassy officials visit Brittney Griner in Russia prison

White House press secretary Karine Jean-Pierre said Brittney Griner "is doing as well as can be expected under the circumstances" and that the administration was working "to resolve the current unacceptable and wrongful detentions" of Griner and Whelan."

Kremlin: Any talks about Brittney Griner swap must be confidential

Asked if Brittney Griner could be freed as part of a prisoners swap with Washington, Kremlin spokesman Dmitry Peskov said in a conference call with reporters that "we always say that any contacts about possible exchanges can only be conducted in silence under a tight lid on any information."