The current law bans bicycles; the mountain bikers are trying to get that law changed.

The  millions of acres and miles of trails in the United States should not necessarily be limited forever to just the people who were using them in 1964.

Regulations can and are implemented to permit useage by multiple members of the society of our National Lands.  

And those who merely sit at their computer and type should be listened to less than those actually out on the those National Lands.