FILE PHOTO: U.S. President Donald Trump signs a Memorandum on Aluminum Imports and Threats to National Security at the White House in Washington, U.S., April 27, 2017. REUTERS/Kevin Lamarque/File Photo
FILE PHOTO: U.S. President Donald Trump signs a Memorandum on Aluminum Imports and Threats to National Security at the White House in Washington, U.S., April 27, 2017. REUTERS/Kevin Lamarque/File Photo