"Get out of My Country" Discussion Question

In his article, "Foreign Bodies: Migrants, Parasites, and the Pathological Nation," Inda expounds the theory of immigrants as parasites. In the context of Proposition 187, he discusses how proponents of the proposition view undocumented immigrants as parasites that leech off of public services like education, welfare, and healthcare. In addition, he sheds light on the opposite view - that of undocumented immigrants as hosts who provide labor for California. Neither view, however, places immigrants in a positive light. I wonder if undocumented immigrants are ever held in positive regard and if all immigrants - whether undocumented or documented - are viewed in the same light.