This seems like the most effective solution. Imagine if you knew that if you littered, there is a 100% chance you would get a $10 fine immediately. Almost no one would litter ever again, even though the fine is much smaller than the fine is in most countries.

Problem is it just takes a lot of resources to police, more than the fine revenue. But with CCTV and computer vision it's getting increasingly cheap.

> But with CCTV and computer vision it's getting increasingly cheap.

The barrier in the US isn't cost. It's a right to privacy and a culture of distrust of government.