California ' s massively successful economy existed long before them and was bolstered further when the US decided to use educational institutions in the region for tech development during the fifties and sixties . These are resources they have flat out taken from the people who accepted them into this country and their crowding the real estate market and other resources restricted actual Americans from enjoying those same benefits . I honestly think we made a horrible mistake by offering amnesty to begin with . Furthermore , the drain of manufacturing jobs by NAFTA , a bill that was supposed to stop this from happening , only resulted in jobs being created in California and other Latinodense toilets and it dropped their pay levels enormously , injuring the hell out of our lower and middle class .