@Lily, I have compassion for anyone suffering.  I know many illegal workers are economic refugees, and I believe if any one us were in the position they find themselves in, we would become illegal immigrants if we have to, also.  But I don't even try to argue that with haters.  They are incapable of comoppassion for thse who aren't like them.  I try to at least reach them in a place they could possible understand, which in the case of the green card holders, I would think, yeah, compassion might be evoked.