I'm not sure that illegal aliens really hurt our economy in general. It is true that some are paid under the table while receiving free government and social benefits. But their hard work and cheap labor produce cheap prices for many of our products, including food. We also use cheap labor in foreign lands so that Americans can afford great luxuries and goods at low prices.
Let's be honest. We live luxurious lifestyles behind the backs of the poor of other countries. Because of cheap labor, even the poorest of Americans can afford incredible things like cell phones, computers and cars.