Sirs,
As long as criminals believe that someone may be an armed citizen while visiting a US Park, the probability of an assult or robbery is significantly reduced.
This relationship of an armed citizen vs. criminals has been proven time and time again. Where weapons are prohibited, crime exists in abuntant numbers. Cities that have banned legal weapons have seen crime rates rise to the point where extra officers were needed at the public expense.
No law abiding citizen should need permission to enter any US owned / managed property with an concealed weapon providing they have a valid permit issued by their state of residence.
Sincerely,
Frank J. Hensley
CW3, USA(Ret)
15803 Dickerson Place
Dumfries, VA 22025
703-312-3238 day