I do not know if opioids are State sponsored by China to poison the USA. I am sure China remembers the British opium wars well. China may be sending drugs only for profit or maybe just for death and destruction, or both.

The Mexican/Columbian drug cartels were losing money due to the fatal doses of Fentanyl so they have reduced the Fentanyl content and recently fewer deaths are reported in the US due to drugs. Some say NARCAN is responsible for the drop but only slightly. The southern drug cartels are all profit motivated.