Geez, you not only have to worry about invaders from the South, but the East as well!
Southerners are much better then Northeasterners with the exception of some Texans. Texas has long had a streak of socialists, from LBJ to Bill Moyers and Jim Hightower. A Texas socialists is responsible for the majority of gun control in California, State Senator Jack Scott, formerly of Sweetwater, TX.
The best California immigrants come from Oklahoma.