The words "well regulated" had a far different meaning at the time the Second Amendment was drafted. In the context of the Constitution's provisions for Congressional power over certain aspects of the militia, and in the context of the Framers' definition of "militia," government regulation was not the intended meaning. Rather, the term meant only what it says, that the necessary militia be well regulated, but not by the national government.
To determine the meaning of the Constitution, one must start with the words of the Constitution itself. If the meaning is plain, that meaning controls. To ascertain the meaning of the term "well regulated" as it was used in the Second Amendment, it is necessary to begin with the purpose of the Second Amendment itself. The overriding purpose of the Framers in guaranteeing the right of the people to keep and bear arms was as a check on the standing army, which the Constitution gave the Congress the power to "raise and support."
As Noah Webster put it in a pamphlet urging ratification of the Constitution, "Before a standing army can rule, the people must be disarmed; as they are in almost every kingdom in Europe." George Mason remarked to his Virginia delegates regarding the colonies' recent experience with Britain, in which the Monarch's goal had been "to disarm the people; that [that] . . . was the best and most effectual way to enslave them." A widely reprinted article by Tench Coxe, an ally and correspondent of James Madison, described the Second Amendment's overriding goal as a check upon the national government's standing army: As civil rulers, not having their duty to the people duly before them, may attempt to tyrannize, and as the military forces which must be occasionally raised to defend our country, might pervert their power to the injury of their fellow citizens, the people are confirmed by the next article in their right to keep and bear their private arms. . . .
. . . .It would be incongruous to suppose or suggest the Bill of Rights, including the Second Amendment, which were proscriptions on the powers of the national government, simultaneously acted as a grant of power to the national government. Similarly, as to the term "well regulated," it would make no sense to suggest this referred to a grant of "regulation" power to the government (national or state), when the entire purpose of the Bill of Rights was to both declare individual rights and tell the national government where the scope of its enumerated powers ended.
In keeping with the intent and purpose of the Bill of Rights both of declaring individual rights and proscribing the powers of the national government, the use and meaning of the term "Militia" in the Second Amendment, which needs to be "well regulated," helps explain what "well regulated" meant. When the Constitution was ratified, the Framers unanimously believed that the "militia" included all of the people capable of bearing arms.