Second of all, if it did, it would still more than pay for the benefit of kicking them out within a few years. In California alone, illegals cost us many billions a year in welfare, schooling, housing, criminal conduct, prisons, lower wages, etc.
Maybe someone should do a graphic of a U.S. dollar bill -- two pictures: this is the size of your dollar with taxes taken out to support illegal aliens, this is the size of your dollar without taxes taken out to support illegal aliens" -- what do you think?