On April 8, according to the Washington Post, this past weekend, when Elon Musk posted several articles on social media criticizing the tough tariff plan promoted by one of President Trump's main White House advisers, he actually overstepped the official and made a direct appeal to Trump himself. According to two people familiar with the matter, who spoke on condition of anonymity because it involved private conversations, Musk's intervention has not yet achieved results. However, Trump also said he was open to negotiations on some policy contents. At the same time, Musk uploaded a video on platform X by the late conservative economist Milton Friedman, in which Friedman emphasized the benefits of international trade cooperation, calling it an "impersonal operation of prices" and analyzed the global sources of various raw materials using an ordinary wooden pencil as an example.