Assistant Attorney General Vanita Gupta faces scrutiny over her family's multi-million dollar stake in Avantor, a company that manufactures acetic anhydride. This chemical is a key ingredient in converting poppies into heroin and has been found in Mexican drug labs linked to the Sinaloa cartel. Despite being highly regulated, 92% of heroin made in Mexico reportedly uses acetic anhydride produced by Avantor's subsidiaries.
