Experts believe breakthrough in US fentanyl crisis may have started in China

US overdose deaths have plunged, but experts warn the ‘supply shock’ from Chinese precursors may only be a temporary fix As Donald Trump travels to Beijing this week, fentanyl – and China’s role in its supply chain – remains an enduring point of acrimony in bilateral relations . At a UN meeting in March, the US again accused China of failing to stop its chemical industry selling the precursors required to make the potent synthetic opioid , while China suggested the US was shifting the blame for