David Kopel explains that it also violated the 1987 Constitution of the state of “New Columbia,” adopted by the District’s Council to serve in a desired condition of future statehood, which included in its Bill of Rights, a Sec.102 whose text was identical to the federal Second Amendment.
Accordingly, when DC lawyers argue to lower federal courts, and to the U.S. Supreme Court, that the language of the U.S. Second Amendment is not an ordinary individual right, they are making an argument which is decisively contradicted by the very constitution adopted by the government whom the lawyers are representing.
Second, DC’s cert. petition makes the novel argument that the District of Columbia (an entity over which the U.S. Constitution grants Congress plenary power) is somehow already a sovereign state for purposes of the Second Amendment; they claim that the 1886 Supreme Court decision in Presser v. Illinois, which held that under the 14th Amendment Privileges and Immunities clause, none of the Bill of Rights are enforceable against states, immunizes D.C. today from the enforcement of the Second Amendment. Yet the New Columbia Constitution shows that D.C. wants to be a state and wants the exact language of the Second Amendment to be enforceable against D.C.