AdvertisementBiden administration says fentanyl-xylazine cocktail is a deadly national threatPlay03:39Download AudioApril 12, 2023Brian MannfacebookEmailDr. Rahul Gupta, director of the White House Office of National Drug Control Policy, speaks at a press conference at the Superior Council of the Judiciary in Bogota, Colombia on Aug. 23, 2022. (Anadolu Agency via Getty Images)