Another Non-Resident Ensnared by D.C. Gun Laws

Roll Call reports that this time it is an agricultural lobbyist from South Carolina:

Capitol Police confiscated a 9mm Ruger handgun from the bag of Camden, S.C., resident Ronald William Prestage shortly after 9 a.m. on Wednesday morning at the Cannon House Office Building. Prestage, 59, was arrested and charged with carrying a pistol without a license, a District of Columbia offense that carries up to five years in prison.

Are there really this many people that don't know about D.C.s gun laws and their propensity for make examples of anyone caught with a firearm inside the city?