To protect strong unions and better pay for legal immigrants and citizens. http://spectator.org/articles/59956/cesar-chavez-anti-immigration-his-union-core Cesar Chavez wanted desperately to protect his union from illegal border crossings by Mexican “strikebreakers.” At core, Chavez was demanding — like property owners along the border today — that the sovereignty of the United States be respected. Those who remember Chavez recall him vividly as a committed Chicano activist who neither minced words nor shield away from acting on his beliefs. And in doing so, he put himself firmly on record against illegal immigration. Another Article. Huffington post, to add to these claims. http://m.huffpost.com/us/entry/5065654 Chavez brought up good points and his worries seem to be coming to fruition. Good decent paying jobs and strong unions are going away as more and more companies outsource to undocumented workers or as Chavez called them "Scabs and Strike Breakers."