I want the illegal presence of certain people made unmistakeably obvious, and therefore I want to have to prove myself a citizen.
Frequently
and
Pervasively.
So if I can't prove myself a citizen frequently and pervasively, you'll do ... what? Throw me in jail until my identity can be established? because I don't have a bureaucratically-produced piece of paper?
You want my papers, you get a search warrant. I don't know what country you're in, but in mine we follow something called the 4th Amendment to the Constitution.
You want the illegal presence of certain people made obvious? how about eliminating their incentive to be here? Stop handing out money to them (confiscated from me), and let employers and employees work out their mutually-fair wages (get rid of minimum wage).
Innocent until proven guilty, bub. I'm me, not a piece of paper. Just because you don't have an ID on you for my satisfaction doesn't mean you should be immediately suspect, jailed, and deported.
A National ID is a license to exist. Do you REALLY want to give the government that power? I don't - and will go to the wall over it.