While Biden justified his Yemen strikes without congressional authorization, in 2020, when President Donald Trump was escalating hostilities with Iran, he was a staunch defender of the notion that Congress should be consulted before taking military action that could spark U.S. involvement in a regional war.

“Let’s be clear: Donald Trump does not have the authority to take us into war with Iran without Congressional approval,” Biden said on Twitter at the time. “A president should never take this nation to war without the informed consent of the American people.”

Hoist with his own petard, oof.