Get used to President Donald Trump's comprehensive tariffs. Though the president's across-the-board tariffs imposed under his emergency powers were invalidated by the Supreme Court in February, the new more specific tariffs imposed in their place are likely to remain in place at least until a new administration takes office in January 2029. Why has it proven so difficult to end tariffs imposed by presidential action? They are not mandated by the Constitution. The tariff power rests with Congress, and it has never granted the president open-ended authority over tariffs. Nor are such measures…
