Mass deportation of illegals will shrink the U.S. labor force by 6.4% and at a cost to taxpayers of $400 billion while decreasing U.S. GDP by about $1 trillion. And that assumes that 20% of those here illegally head for the border voluntarily. Remember that only about half of the 12 million illegals are from Mexico; the rest we’ll have to pay to fly home elsewhere. And the money saved in social services? That only amounts to tens of millions, nowhere near enough to balance the books.