Why are Republicans against Immigrants (cheap labor)?

Because they cost the Government money in the long run with Free Health Care, Education and Welfare Benefits. Not to mention since they are not legal they cannot serve in our Armed Forces during emergency purposes. Most are payed under the table, so the Government gets no taxes to help pay for what they take. Also the USA would rather give money to their own citizens, even if it costs a little more than to some illegal immigrant who leeches off the system for free.