One teeny little thing: you know as well as I do that the initial concept of "the right of the people..." referred to citizens not invaders in red coats or any other color. Can you imagine the first Americans granting citizenship to the bastard child of a Hessian?
Well, unfortunately, the law will apply to you and me and each and every citizen and each and every employer. Our employers will be required to ask for our papers and we will be forced to present them. Or else.