Speaking to union members in Anchorage, Alaska today, AFL-CIO President Richard Trumka said Sarah Palin would “go down in history like [Joe] McCarthy,” and predicted that “Palinism will become an ugly word.”

Palin(‘s ghostwriter) took the time to pen a longer response on Facebook posted tonight, in which Palin asks union members to consider “a different home for you: the commonsense conservative movement … you won’t regret it.”