I believe that presented with a choice of show your ID at your front door one time and the illegals are on the big green bus south and not keeping you up at night, stealing your lawnmower, throwing trash in the alley, not ignoring their dogs needing to be treated for fleas and ticks, not leaving 2 junk cars in the back yard, not acting like they don't understand you at the g-store where your kid can't GET a job despite the fact that he goes to the same school as these jerks, not running down your property values, not hanging out in gangs on the street till 3 am, not pi$$ing in your bushes on the side of your house, not yelling at your wife, not parking their cars in front of YOUR house, etc etc . . . . most folks will take that opportunity to, thinking of ALL those wonderful memories, gleefully take the 15 seconds to smile next to their crummy DL photo.
I know I would.
It would not be one time, if the effort is to be effective at all.
Are you prepared to show your ID on demand of any federal law enforcement agent, without probable cause, from now until the day you die?
It won't be one time and your a fool to think it would be a one time event.