MEXICO CITY, Mexico (AFP) — The United States has asked China to crack down on postal shipments of synthetic opioids, which President Donald Trump says are fueling a US drug-abuse crisis, a State Department official said Wednesday. Because synthetic opioids, such as the highly potent drug fentanyl, are hard to detect in the mail, fighting drug trafficking into the United States has become “a completely different ballgame,” said James Walsh of the State Department’s Bureau […]