STORY: Jean-Pierre also reported President Joe Biden has received a letter from Griner, appealing for help to bring her home. The White House spokeswoman added Biden "takes this to heart" and that he believes Griner is being wrongfully detained.
Griner was taken into custody at a Moscow airport on Feb. 17, when a search of her luggage allegedly revealed multiple cannabis oil vape cartridges.
She was charged with intentionally importing narcotics into Russia in a trial that began last week.
If convicted, she faces up to ten years in a Russian prison.