On What Really Matters, Walter Russell Mead discusses Donald Trump’s ban on foreign students at Harvard, the Supreme Court’s decision on the president’s authority to fire federal commissioners, the Senate’s vote against California’s electric vehicle mandate, and a report from the Copenhagen Democracy Summit.

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A robot from AgiBot is seen during the Global Developer Conference, organized by the Shanghai AI Industry Association, in Shanghai on February 21, 2025. (Hector Retamal via Getty Images)