U.S. Park Service Says to Leave Your Cash at Home, but Some Object
www.nytimes.com
Complaints have been mounting on social media, and now a group has filed a lawsuit, as the service has continued rolling out policies against accepting cash to enter federal parks.

From the New York Times:

Complaints have been mounting on social media, and now a group has filed a lawsuit, as the service has continued rolling out policies against accepting cash to enter federal parks.