The U.S. imposed 50% tariffs on Canadian imports, prompting retaliatory measures, while the Supreme Court allowed White House ballroom construction to proceed. President Trump threatened a defamation lawsuit against a think tank for criticizing his National Guard deployment. Markets dipped as federal debt hit $40 trillion, and the Navy considered renaming an aircraft carrier after Trump. Other stories include San Antonio renaming a street formerly honoring Cesar Chavez and updates on golf and college football eligibility.