President Trump is famously spelling-challenged, but this one was not his fault.

Mr. Trump is set to deliver his first State of the Union address on Tuesday, and the tickets issued to lawmakers’ spouses and guests contained a glaring typo: “State of the Uniom.” The tickets, printed by the Office of the Sergeant at Arms and Doorkeeper, had to be reissued on Monday.

“It was corrected immediately, and our office is redistributing the tickets,” a spokesman for the sergeant at arms told Agence France-Presse. The office did not immediately respond to a request for comment on Monday evening, and it was not clear how many tickets were affected.

Lawmakers in both parties poked fun at the typo. But Democrats were more ruthless in their mockery.