President Donald Trump doubled tariffs on imported steel and aluminum to 50% on Tuesday, June 3, through a presidential proclamation that cited national security risks and the need to counter foreign oversupply. The White House said the move aims to protect U.S. manufacturers from trade practices it says weaken domestic production and threaten defense readiness. Trump initially imposed 25% tariffs under Section 232 of the Trade Expansion Act in 2018, after the...