The PBS NewsHour covers Canada’s retaliatory tariffs against the U.S., featuring an interview with Trade Minister Dominic LeBlanc on the escalating trade war. Other segments include a Supreme Court ruling on mail-in voting restrictions, a study revealing high CTE rates among NFL players, and the devastating impact of U.S. aid cuts on healthcare in rural Afghanistan. The broadcast also notes the passing of Dolly Parton and reports on measles deaths in Pennsylvania.