L
"The difference between Reagans anti-communism stance and his stance on immigration is that one of the two actually worked."
The Birchers, in this article, warn of mortal danger, 90 million Mexicans coming over, and the destruction of America 'soon' if their recommendations (identical to the enforcement-only faction's recommendation today) weren't implemented.
Nonetheless, here we are still standing. I'm not saying all their points are bunk but the existence of a 20 year old article predicting certain and swift doom to America if we didn't adopt their anti-immigration policy kinda loses its punch when those predictions fail to come true.
As a prediction, it's right up there with the "population bomb" scares of the '70s.