In a small way this has happened in Colorado. Certain parks have become so popular that officials are considering a daily limit. Hanging Lake for instance: http

In a small way this has happened in Colorado. Certain parks have become so popular that officials are considering a daily limit. Hanging Lake for instance: https://www.denverpost.com/2017/08/22/hanging-lake-permits-daily-visitor-limit/ https://www.denverpost.com/2017/08/22/hanging-lake-permits-d... Of course there are many other parks that don't have this problem in Colorado.