Gov. Newsom sends National Guard and CHP to tackle San Francisco's fentanyl crisis
U.S. says it 'infiltrated' the Sinaloa drug cartel in the fight against fentanyl
U.S. charges El Chapo's sons and other Sinaloa cartel members in fentanyl trafficking
Fentanyl crackdown: AG Garland announces charges against 28 members of Sinaloa cartel
Biden administration says fentanyl-xylazine cocktail is a deadly national threat
China says no illegal fentanyl trafficking between it and Mexico
Mexico asks China's help in curbing production of fentanyl
Mexico asks China for help on fentanyl, slams US critics
What to know about xylazine, the drug authorities are calling a public safety threat
Mexican pharmacies are selling pills laced with deadly fentanyl to U.S. travelers