Five years ago, my family took a vacation to Niagara Falls. On our return across the Canadian border, U.S. Immigration officials detained us for several tense hours because we happened to be the unlucky renters of a car that matched some sort of suspect list. The same year Immigration officers were busily occupied with the travel risk of the Simpson family, hundreds of thousands of babies were born in hospitals all across the U.S. to parents who gained entry in the country illegally (obviously not driving Hertz rental cars). The parents' reward, other than a beautiful newborn: shiny new made-in-the-USA...