… Investigation: Mexican drug cartel targets Native American reservations with fentanyl, officials … have targeted the six Native American reservations in Montana because … : Mexican drug cartel targets Native American reservations with fentanyl, officials …… Investigation: Mexican drug cartel targets Native American reservations with fentanyl, officials … have targeted the six Native American reservations in Montana because … : Mexican drug cartel targets Native American reservations with fentanyl, officials …