Until recently, if you had a permit to carry a gun in the District of Columbia, local law kept you limited to twenty rounds of ammo on your person.
Dick Heller – the named plaintiff in the historic 2A victory known as Heller v. District of Columbia – has another notch on his gun, so to speak. It was his lawsuit that led to the twenty-round limit being righteously kicked off the books.
The limit had been meaningless, since anyone planning to rob or terrorize (let alone kill) would certainly ignore an ammo limit law. And, if such a criminal was captured alive, the “excess ammo” violation would be the first charge to get tossed during the plea bargain process. By definition, only the law-abiding obey the law.