U.S. Trade Representative Robert Lighthizer testifies before a Senate Finance Committee hearing on "President Trump's 2018 Trade Policy Agenda" on Capitol Hill in Washington, U.S., March 22, 2018. REUTERS/Kevin Lamarque

BERLIN (Reuters) - U.S. Trade Representative Robert Lighthizer told U.S. lawmakers that the European Union would be exempted from planned import tariffs on steel and aluminum, German news agency dpa reported on Thursday.