Estimated cost of illegal immigration is about $113 million per year. A payback period of less than four years. One of the best investments we could ever make. http://www.fairus.org/publications/the-fiscal-burden-of-illegal-immigration-on-united-states-taxpayers
And that’s just the cost attributable to tax. The total when you consider property values and social disruption, the cost of crime borne by the public, is much, much more.
$113 million per year should be $113 billion. My bad.