DENVER (AP) — The head of a prominent U.S. energy trade group says President Donald Trump's tariffs on European steel and Chinese goods pose a multibillion-dollar threat to America's energy industry. But the American Petroleum Institute's Jack Gerard said Thursday he hopes the escalation of trade rhetoric and sanctions with the U.S.' trading partners will ease. Gerard says tariffs on European steel will drive up the cost of specialized steel imports used for U.S.