WASHINGTON (AP) — When Republican Rep. Bill Posey of Florida ended an Oct. 21 House floor speech with a fist pump and the phrase "Let's go, Brandon!" it may have seemed cryptic and weird to many who were listening. But the phrase was already growing in right-wing circles, and now the seemingly upbeat sentiment -- actually a stand-in for swearing at Joe Biden -- is everywhere.

South Carolina Republican Jeff Duncan wore a "Let's Go Brandon" face mask at the Capitol last week. Texas Sen. Ted Cruz posed with a "Let's Go Brandon" sign at the World Series. Sen. Mitch McConnell's press secretary retw...