Theoretically things like that are supposed to be restricted to code but in practice it seems like enforcement ended a couple of decades ago. In the 90s, I knew guys who got tickets for having window tinting which was too dark or off-brand headlights but those are incredibly common now, and it appears that DMVs stopped checking for them at inspections and the police ignore it unless they’re looking for an excuse to search the car. If you’re a white guy in a vehicle which doesn’t radiate poverty, you’re probably more likely to get hit by lightning than stopped.
The policy is probably the de facto assumption that driving is a right: the United States has been rebuilt around the need to drive everywhere and the entire system tends to implicitly assume that anything which would impede someone from driving is unconscionable unless you get to the point of a serious collision or fatality.