"Why do you need an AR15?"

[montana]

I'd say it is partly a Bill of Restrictions on the Federal Government, and partly a Bill of Individual Rights. But, I was discussing only the discrepancy in the 2nd Amendment noted above.


States apparently also have rights. https://constitution.laws.com/states-rights

And according to the 10th Amendment, the people have powers, too.


That makes no sense. Individual citizens make up the whole of any organization. Did you mean to say that the militia was (as per the Mason quote) the whole people? If so, there are some flaws with that idea.

The "whole people" make up the unorganized militia, which in reality is not actually a militia per se, but a reserve manpower pool. Since it is not required to conduct military training, and is not organized into operational units, it cannot be the "well regulated" (i.e., trained, disciplined, and organized) militia addressed in the 2nd Amendment.

The Second Amendment (Amendment II) to the United States Constitution protects the right of the people to keep and bear arms and was adopted on December 15, 1791, as part of the first ten amendments contained in the Bill of Rights.[1][2][3][4] The Supreme Court of the United States has ruled that the right belongs to individuals,[5][6] while also ruling that the right is not unlimited and does not prohibit all regulation of either firearms or similar devices.[7] State and local governments are limited to the same extent as the federal government from infringing this right, per the incorporation of the Bill of Rights.



While both Monroe and John Adams supported the Constitution being ratified, its most influential framer was James Madison. In Federalist No. 46, he confidently contrasted the federal government of the United States to the European kingdoms, which he contemptuously described as "afraid to trust the people with arms." He assured his fellow citizens that they need never fear their government because of "the advantage of being armed ..."[9][10]

By January 1788, Delaware, Pennsylvania, New Jersey, Georgia and Connecticut ratified the Constitution without insisting upon amendments. Several specific amendments were proposed, but were not adopted at the time the Constitution was ratified. For example, the Pennsylvania convention debated fifteen amendments, one of which concerned the right of the people to be armed, another with the militia. The Massachusetts convention also ratified the Constitution with an attached list of proposed amendments. In the end, the ratification convention was so evenly divided between those for and against the Constitution that the federalists agreed to amendments to assure ratification. Samuel Adams proposed that the Constitution:

Be never construed to authorize Congress to infringe the just liberty of the press, or the rights of conscience; or to prevent the people of the United States, who are peaceable citizens, from keeping their own arms; or to raise standing armies, unless when necessary for the defence of the United States, or of some one or more of them; or to prevent the people from petitioning, in a peaceable and orderly manner, the federal legislature, for a redress of their grievances: or to subject the people to unreasonable searches and seizures.[9]

In United States v. Cruikshank (1876), the Supreme Court of the United States ruled that, "The right to bear arms is not granted by the Constitution; neither is it in any manner dependent upon that instrument for its existence" and limited the scope of the Second Amendment's protections to the federal government.[11] In United States v. Miller (1939), the Supreme Court ruled that the Second Amendment did not protect weapon types not having a "reasonable relationship to the preservation or efficiency of a well regulated militia".[12][13]

In the twenty-first century, the amendment has been subjected to renewed academic inquiry and judicial interest.[13] In District of Columbia v. Heller (2008), the Supreme Court handed down a landmark decision that held the amendment protects an individual right to possess and carry firearms.[14][15] In McDonald v. Chicago (2010), the Court clarified its earlier decisions that limited the amendment's impact to a restriction on the federal government, expressly holding that the Due Process Clause of the Fourteenth Amendment incorporates the Second Amendment against state and local governments.[16] In Caetano v. Massachusetts (2016), the Supreme Court reiterated its earlier rulings that "the Second Amendment extends, prima facie, to all instruments that constitute bearable arms, even those that were not in existence at the time of the founding" and that its protection is not limited to "only those weapons useful in warfare".




According to the legal definition of the militia as set forth in the United States Code:

Section 311 of US Code Title 10, entitled, "Militia: composition and classes" in its entirety:

"(a) The militia of the United States consists of all able-bodied males at least 17 years of age and, except as provided in section 313 of title 32, under 45 years of age who are, or who have made a declaration of intention to become, citizens of the United States and of female citizens of the United States who are members of the National Guard.

(b) The classes of the militia are —

(1) the organized militia, which consists of the National Guard and the Naval Militia; and

(2) the unorganized militia, which consists of the members of the militia who are not members of the National Guard or the Naval Militia."