Very interesting indeed.

But I think to say that 8026 is the Coin Counterfeiting statute for the State of South Dakota in 1901 is incorrect. The Statutes of the State of South Dakota (2d Rev. Ed.) Embracing the General Laws in Force Jan. 1, 1901 you point at can be entirely looked at on Wikisource. There, it ends at page 1,111. I think what your Google search ended finding is rather the first related book down below, namely the Statutes of the state of South Dakota: embracing the general laws in force Jan. 1, 1899 : with digested notes of judicial decisions construing the law, Volume 1. Clicking on it and searching for 8026 we unfortunately get incomplete index results (such as counterfeiting with intent to utter in state, is forgery, 8026) supposedly found on pages 2,198 and 2,248. I haven't been able to find the complete book (or even a complete page) there or elsewhere for that matter.

As for Teddy Rossevelt, what you are saying regarding the anti-trust break up seems to make sense, but I don't see how South Dakota fits in with his actions. His only connection I have found is with the neighbouring state, North Dakota:

Roosevelt moved West following the 1884 presidential election, and he built a second ranch named Elkhorn, which was thirty-five miles (56 km) north of the boomtown of Medora, North Dakota. Roosevelt learned to ride western style, rope and hunt on the banks of the Little Missouri. Though he earned the respect of the authentic cowboys, they were not overly impressed.

But, what I did found of interest on the topic of money and international affairs was about Richard F. Pettigrew, South Dakota's first Senator to the United States Senate who served from November 2, 1889 to March 4, 1901:

In 1917, while being interviewed by a journalist from the Argus Leader, Pettigrew offered his opinion that the First World War was a capitalist scheme intended to further enrich the wealthy, and he urged young men to evade the draft. The local United States Attorney secured a felony indictment of Pettigrew for suspicion of violating the Espionage Act of 1917, the same charge for which Socialist leader Eugene V. Debs was then presently serving a ten-year Federal prison sentence.
Pettigrew assembled a high-powered legal defense team headed up by his close personal friend, prominent attorney Clarence Darrow. The trial was repeatedly delayed, and eventually the charge against him was dropped.
Pettigrew had the formal document of indictment framed, and prominently displayed in his home next to a framed copy of the United States Declaration of Independence, where it remains to this day as part of the exhibits of the Pettigrew House & Museum.