As another "not a member of any party," I have to disagree. While many republicans might be racist (and many Democrats are closet racists as well), "anti-immigration" does not necessarily = "we hate non-white people." Most Republicans want the US to enforce the immigration laws which are already in place. The drive to enforce our immigration laws has an economic motivation, not prejudicial. The current laws were enacted to reduce the load of economically impoverished immigrants on our welfare system, typically favoring those who will be financially independent from "economic benefits." The GOP want immigrants to follow our laws.