The numbers are huge and future procreation multiples staggering:

Report: 2.5 million illegal immigrants under Obama, 400,000 yearly | Washington Examiner

The future expenditures at some point in the future will excede America's ability to pay. That is when the USA starts to increase it's speed of becoming a bonifide third world impoverished country.

How could it not?

How can so many Americans be so stupid on the subject and allow it to continue?