Apparently, you two have selective cost analysis.  You totally disregard the Billions of $$$$$ illegal entrants are costing the tax payers.  L.A. County admits to paying out over $650 million a year to cover these costs alone.  Multiply that number by every major city in the U.S..
http://dailycaller.com/2013/09/17/report-la-county-to-pay-650-million-in-welfare-benefits-to-illegal-immigrant-parents/