As far as mining the borders or shooting illegals on sight, like you would prefer, it would do little to nothing to stop the flow of illegals. They would find a way into the country by other means.
There is an intelligent solution to this problem but in your case it would not be recognizable.
Where did I ever say that?
So, only amnesty is realistic?
Seriously, lets say this plan goes through and half refuse to sign up because they will now be forced to take pay cut via having to pay taxes. Will you favor deporting those people who refuse to sign up?
What about new illegals who come in?