To be perfectly honest, I've witnessed just as many-if not more-FReepers who are opposed to reasonable immigration restrictions behave in that manner.
I'm not convinced we need to restrict immigration, but we do need to register these people so we know who they are. A guest worker program would do that. That way we can separate between those that just want to work and others that might be bad news for America. President Bush is absolutely right about this and I support him 100%