US, China launch working group to address opioid crisis. In a significant move, the United States and China have established a high-level working group focused on combating the opioid crisis. This initiative, emerging from a meeting between Presidents Joe Biden and Xi Jinping, aims to address the alarming rise in opioid-related overdoses, particularly those involving fentanyl. The group, led by the US White House Deputy Homeland Security Adviser, will concentrate on collaborative law enforcement efforts and strategies to curb illicit drug financing.