U.S. growth forecast cut sharply by OECD as Trump tariffs sour global outlook CNBCDonald Trump's tariffs will hurt global growth, OECD warns BBCTrump’s Tariffs Plunge US and Global Economy Into Slowdown Bloomberg.comOECD lowers global outlook as Trump trade war hits US growth ReutersGlobal economy set for weakest growth since Covid, OECD warns Financial Times