US overdose deaths have plunged, but experts warn the ‘supply shock’ from Chinese precursors may only be a temporary fix 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

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