One of the problems is that the US has so many laws on the books that law enforcement has no choice but to enforce it sporadically. If every law was enforced as

One of the problems is that the US has so many laws on the books that law enforcement has no choice but to enforce it sporadically. If every law was enforced as written then I would imagine about 80% of the US population would be in the justice system in one form or another at any given moment. But it does provide a way to pick-and-choose when enforcing laws.