If you want to be subtle, buy him a Brooks Brothers Dog and Stripe Tie. It’s part of the unofficial uniform for racist, homophobic poli-sci majors, especially the ones who think graduating cum laude is something to brag about.
If you want to be not-so-subtle, buy him a hardcover copy of The Reagan Diaries and a Ronald Reagan Presidential Jelly Bean Jar. He’ll be forced to laugh like he gets the joke, but he’ll understand that you’re making an open declaration of war.
As a secret stocking stuffer, you should also sign him up for a membership in the ACLU. (Be sure and check the box that lets them share his personal information with other charities.)