美国对中国最大的不满，终于真相大白，中国救了美国上千条人命

Group 1 - The core argument of the articles highlights the contradiction in the U.S. government's stance on fentanyl, where it blames China for the crisis while evidence suggests that China's regulations have actually saved lives in the U.S. [1][3] - A recent study indicates that China's 2019 ban on fentanyl exports has prevented nearly a thousand American deaths, challenging the narrative that China is the main culprit behind the fentanyl crisis in the U.S. [3][9] - The U.S. has imposed a 245% tariff on China, claiming it is a measure against fentanyl, but the reality is that the majority of fentanyl in the U.S. comes from Mexican drug cartels, not China [3][5] Group 2 - Despite China's proactive measures, the U.S. has not permanently classified fentanyl as a controlled substance, leading to ongoing issues with opioid prescriptions and misuse within the country [5][7] - The articles argue that the fentanyl crisis in the U.S. is largely a result of internal issues, including the pharmaceutical industry's profit motives and regulatory failures, rather than external factors related to China [7][9] - The economic impact of the trade war, including losses exceeding $1.5 trillion, is contrasted with the lives saved due to China's cooperation in drug control, suggesting that the U.S. has mismanaged the situation [9]