"A first violation of the carry ban is punishable by a fine of up to $5,000 and imprisonment for up to five years," Levy writes. "Does the Constitution mandate that the nation's capital allow firearms to be carried outside the home? The right to bear arms, the court said in Heller, is an 'individual right unconnected to militia service.' To 'bear' means to 'carry.' More specifically, when used with 'arms,' the opinion said, 'bear' means 'carrying for a particular purpose -- confrontation.' Nothing in that formulation implies a right that can be exercised only within one's home … "