1st: Being afraid to do the right thing plays into the enemy's hands. Their cries of "racist" will have worked. But...
We don't have to let them win.
2nd: A round-up of 10 million isn't necessary. There is a way to get the Illegals to Deport Themsleves. We'll probably need to round-up a few hunderd thousand. We'd need more infrastucture, but I'm sure we could could find plenty of volunteers for a Border Patrol Deputy Force.
3rd: Therefore, no police state is necessary.
4th: Having deported themselves, the Illegals won't come back, and will spread the word south of the border as to why.
This idea that they will deport themselves is a theory (and in my opinion a fantasy). Perhaps they would just decide to go into hiding, lay low and find ways to survive and live here? What if they decide to take a chance and come back? What if people decide that it is better to hire low wage Mexicans and take their chances? What if this happens instead of your theory?
This sounds like drug and booze running to me, risk/reward. The result will be a police state, because to remove these folks requires identifying them, finding them, grabbing them, trying them, deporting them and making sure they do not come back. And because it must be done systematically and fairly, EVERYONE will have an ID, be subject to search, have their place of employment raided, face the border police and be in the database.
It will just never happen; the people will not allow it. Why dont we work toward a true solution to the problem, integration, instead of the dead-end approach of deportation?