Do your own research if you please. I stand by the statement that a large percentage of illegals work as independant contractors to individuals. Add in the ones working for very small business, and yes, it is approaching a majority of all illegals immigrants in this country. Find something that proves otherwise, and I will revise that opinion. But this entire exercise is irrelevant, because either way, we are still talking about millions and millions of individuals. And, no, there is no political will in this country for going after indivuals who hire illegal maids and such, even if such a thing was feasible.
What you really need to do is get back to the original point. Since all of the Republicans seem to want to seal the borders (pick your method), and enforce the laws, it comes down to will they all leave when we do. Newt seems to expect most of them to do just that. He's talking about what we would do with those who don't.
Then you base your statement on supposition. So much for your argument.