There is something ironic about US citizens whose families have lived
here for less than 400 years complaining about illegal immigrants...
Anyway, the very real reason why no politician is willing to touch this
issue is because the US economy has become dependent on cheap illegal
labor. So to adjust ash's proposal:

2a) Huge price increases in all domestic products due to regular wages
being paid
2b) Consumers pick cheaper imported merchandise
2c) US companies fold or go overseas
Thus
3) No need for guest worker program

- Marco