BRUSSELS — The EU's trade chief relayed concerns from European businesses, capitals and lawmakers to senior Trump administration officials last fall that Washington’s expanding tariffs risked breaching a trade agreement reached just weeks earlier. In a letter and text messages, dated Sept. 30, 2025, and obtained by POLITICO, Maroš Šefčovič wrote that steep U.S. tariffs on products containing steel were undermining a trade truce that had been formalized in a joint statement little more than a