The Trump administration took formal steps Monday to expand tariffs, according to the Associated Press. The expanded tariffs are on imports tied to national security, targeting semiconductors, chipmaking equipment, and pharmaceuticals. The Commerce Department is investigating how chip-related imports impact national security under a law that allows the president to impose tariffs for that reason. The investigation into pharmaceutical imports covers drug ingredients and broader concerns about reliance on foreign supply chains. Trump confirmed plans for tariffs on pharmaceuticals, saying they aim to boost domestic drug production.