The basis of the argument was Mexicans have a life expectancy of 2 years less than Americans, but massively smaller health care bills. The stipulation is that the return we get (2 years more life) is actually smaller than the cost (in terms of time worked, stress, etc) to bring it about. In other words, you give up 4 years of your life to your work so you can live 2 years longer. So, by giving up the 2 years greater life expectancy (cutting out/back/down hospitals and doctors) we'd get more back.
Not necessarily saying I agree, but I did want to point out that the argument isn't QUITE as fanciful as the reference might make it sound.
edit: it's all cool if you know the argument. Just wanted to make sure nobody was going solely off the sensationalist reference.