U.S. Constitution, Article I — The Legislative Branch, Section 8, Clause 16
To provide for organizing, arming, and disciplining, the Militia, and for governing such Part of them as may be employed in the Service of the United States, reserving to the States respectively, the Appointment of the Officers, and the Authority of training the Militia according to the discipline prescribed by Congress;
Notes
Allows Congress to provide for organizing, arming and disciplining the militia and governing the part employed in the service of the United States. Reserves to the states the appointment of militia officers and the authority to train the militia according to the discipline Congress prescribes, dividing control between Congress and the states.
Use as reference
Lexinter.net | U.S. Const. art. I, § 8, cl. 16 | https://laws.lexinter.net/constitution/us/article-1/section-8/clause-16