The following excerpt is from U.S. v. Engesser, 788 F.2d 1401 (9th Cir. 1986):
Mont.Code Ann. Sec. 46-11-504. This statute eliminates, in Montana, the "dual-sovereignty" exception to the prohibition against being placed twice in jeopardy. It bars state prosecution following federal prosecution for the same conduct. See State v. Zimmerman, 175 Mont. 179, 187-88, 573 P.2d 174, 179 (1977) (state may not prosecute individual for same conduct that served as basis for federal prosecution).
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