Including the power to make up powers not outlined in their own Constitution apparently.
How do you figure that? If SD wants to require every person in the State to own a firearm, and introduces a bill to that effect, how is that not in keeping with their Constitution?
If SD wants it, they’ll vote on it and accept it. Otherwise, they won’t. It’s none of our business, unless you live in SD. Gotta love a Free Republic like that.
Arguably it IS provided for in their State Constitution:
ARTICLE XV — MILITIA
§ 1. Composition of militia.
The militia of the state of South Dakota shall consist of all able-bodied male persons residing in the state, between the ages of eighteen and forty-five years, except such persons as now are, or hereafter may be, exempted by the laws of the United States or of this state.
§ 2. Legislative provisions for militia.
THE LEGISLATURE SHALL PROVIDE BY LAW FOR THE enrollment, uniforming, EQUIPMENT and discipline OF THE MILITIA and the establishment of volunteer and such other organizations or both, as may be deemed necessary for the protection of the state, the preservation of order and the efficiency and good of the service.
[...]
§ 7. Conscientious objectors.
No person having conscientious scruples against bearing arms shall be compelled to do military duty IN TIME OF PEACE.
{We are, IIRC, technically still at war with North Korea; a cease-fire is *NOT* the cancellation of the state of war.}