Combatants within our nation’s political class never suffer for lack of insults — and in recent years they’ve taken to hurling back and forth a particular aspersion with increasing frequency: “un-American.” In recent weeks we’ve heard pundits and politicians declaim that it’s un-American to blame gas prices on Joe Biden, to tax billionaires, to let states decide their own abortion laws, to oppose admitting Ukraine to NATO, to forbid sex-change surgeries for ten-year-olds, and to treat Disney like any other Florida corporation. Still