No, Odin, not afraid - absolutely certain this is going to happen. And American citizens of Hispanic descent will start carrying their official papers around with them at all times, like apartheid-era black South Africans.
There will probably also be scandals about some cop taking someone's papers and then running them in for not having them. Not to mention the entire "Born in East L.A." scenario - a very, very pre-seasonal movie.
And Hispanics of all variations of citizenship (citizen, green card, etc) will avoid the police, which will probably lead to cases of "Well, he tried to run away from me, so he had to be a criminal, so I shot him."
It will certainly lead to serious under-reporting of crime within the community, since not only the criminals, but the witnesses and complainants will be under threat of deportation, justified or not.
I suppose the upside of this is that the guy who mows your lawn will now be an English-speaking American citizen.
How to spot a shill, by John Michael Greer: "What you watch for is (a) a brand new commenter who (b) has nothing to say about the topic under discussion but (c) trots out a smoothly written opinion piece that (d) hits all the standard talking points currently being used by a specific political or corporate interest, while (e) avoiding any other points anyone else has made on that subject."
"If the shoe fits..." The Grey Badger.