Yes, Minnesota shares a border with South Dakota....Sioux Falls is right over the border while traveling west on I-90.
New England states become one, everything west toga the Hudson, including NYC.N. Calif. becomes Jefferson.
And Brookings (South Dakota State, home of the Jackrabbits. Close enough to Golden Gophers, right?)
Moorhead, Minn., is just over the state line from Fargo, ND, and East Grand Forks, MN, is just over the state line from Grand Forks, ND. Perhaps those two cities with their counties might find it desirable to become part of North Dakota.