Not that difficult. Using reasonable suspicion to conduct a lawful stop(reasonable suspicion requires less proof than probable cause) someone can be pulled over for as little as weaving in their lane or a license plate bulb burned out.
As long as a valid reason can be articulated.. the next question is “license and insurance please”...if you don’t have that or it looks fake, they would have likely have probable cause to ask citizen status. Reasonable suspicion often leads to probable cause.( Kind of like a “Terry frisk” leading to discovery of a gun leading to a felony arrest for felon in possession of a gun.) Or “in plain view” leading to a drug arrest from a simple speeding stop.
This aside, what’s the problem with states enacting their own laws?
IMHO,comparing illegal aliens who are committing a crime to holocaust victims is ludicrously trashy.
I do not believe that anyone on this thread has done such a thing.