NEW HAVEN—Rumor has it that last year, US President Donald Trump delayed his so-called Liberation Day tariff announcement by a day, to April 2, because he didn’t want his unconstitutional trade “emergency” to come across as an April Fools’ Day hoax. This year, Trump defied the calendar with an address to the nation on April 1, touting yet another unconstitutional act—a war with Iran conducted without congressional approval.

© Project Syndicate