Compact between Montana and US

I was reading The Montana GOP platform and it refers to a compact (a treaty) between the US and Montana at the time of its entry into the United States.

The platform says that the compact includes clauses about the right of people to bear arms.

OK, fine, Texas has one of those too, so off to Google I go. I get darn little there was such a compact, but Wikipedia does not mention it, and Google gives me court cases that mention it, but not the document itself.

Any have the text?

and

Is such a thing the basis of law in any way?

You’re misunderstanding, I think. The “Compact” they’re talking about is the Constitution. What the Montana resolution argued was that when Montana became a state in 1889, there was an understanding that the Second, Ninth, and Tenth Amendments meant something, and they agreed to become a state under that understanding, so, if you adapt a different interpretation of what those amendments mean, the US would have violated the compact entered into when Montana became a state.

The Montana Constitution also refers to a “compact” with the government, but that doesn’t refer to guns. That’s referring to the enabling act setting Montana up as a state and Montana Ordinance 1, which guaranteed religious freedom, surrendered any rights by the state to Indian lands, guaranteed that land owned by non-Montanans couldn’t be taxed higher than land owned by Montanans, assumed the territorial debt, and set up a public school system. But that “compact” is different than the compact referred to in the treaty.

From the text of a recent proposed Montana gun rights bill, which might help clear up their thinking:

Ah! I see, good old-fashioned Frontier Gibberish. I am just happy the children are here today to hear …
Thank you.