An embarrassing exercise in economic and diplomatic futility. Trump's tariff letters are a joke and the joke is on us.

The letters all read mostly the same, like shockingly incoherent spam e-mails with the recipient’s name in an obviously different font. They are filled with alarming typos, random Capitalization, and sloppy errors. For instance, Trump’s letter to Željka Cvijanović, the chairwoman of the presidency of Bosnia and Herzegovina, begins with “Dear Mr. President.”