Multiple high-authority and primary sources—including official White House documents, presidential statements, and Supreme Court filings—indicate that Donald Trump proposed and attempted to implement a global tariff plan. The White House fact sheet officially confirms a temporary import duty framed as a global policy measure, and credible international outlets such as the BBC and The New York Times consistently report Trump announcing or advocating a 'global tariff' rate of 10% to 15% on all imports. The Supreme Court decisions and related briefs further corroborate that such a plan was formally challenged and adjudicated as sweeping in scope, fitting the description of a global tariff policy. There are no sources substantially contradicting these reports; variations concern implementation details rather than existence of the proposal. Taken together, the convergence of official government materials, direct presidential remarks, and judicial documentation strongly supports that Trump did propose a global tariff plan.