Spike in steel tariffs could imperil Trump promise of lower grocery prices AP NewsEU 'prepared to impose countermeasures' after Trump doubles steel tariffs to 50% CNBCTrump announces new steel tariffs, bonuses and no layoffs while touting U.S. Steel-Nippon deal in West Mifflin Pittsburgh Post-GazetteNews Wrap: Trump's plan to double levies on imported steel draws global reaction PBS