GTA V: Strangers and Freaks: The Civil Boarder Patrol

Joe and Joseph think they are true patriots

Trevor can find these guys after the cargo plane incident. Just south of the Alamo Sea near one of the boat races.

Joe can only speak (I think) German and Joseph is hell bent on keeping immigrants out and Joe wants to help even though he is an immigrant(?) but not Mexican. You go to the bar, chase some mariachi singers and then shoot them with the taze gun.  This also opens up the "Minute Men" random quests.