Much as I appreciate rules fetishism, this is the sort of view that screws up my country.
Look, elsewhere we've seen the wide variety of visas aimed at the "rich", "investors", and "job creators". So, clearly, enforcement isn't uniform across people who are immigrants.
Moreover, in your presumably simple moral system, any law regardless of how unfair in specification is fine so long as the implementation is uniform.
(note here I'm interpreting "fairness in enforcement" to mean uniform, as if we actually take into account "fairness" in the conventional sense your own statement is reduced to uselessness... and I'd rather not believe HN is frequented by the sort of drooling pedantic imbecile that would be necessary to make such a claim)
This being the case, you apparently would have no issue with a law that requires police officers to beat twelve citizens every day, provided they aren't biased in their selection?