D.S.D.: Tribal officers governed by 4A and Indian Civil Rights Act

“The Fourth Amendment, not ICRA, applies here. For one thing, BIA officers are federal officers empowered by federal statute to act. For another, even if Dillon and Flute subjectively believed they were enforcing tribal law—which the Court is convinced of—they still had independent federal authority to arrest Bromwich for possessing marijuana. This is true despite South Dakota condoning medical-marijuana, and federal funding limitations placed on the Department of Justice to discourage enforcing the federal prohibition. Cannabis remains federally prohibited as a Schedule I drug. The federal officers were exercising their federal powers when interacting with Bromwich. The Fourth Amendment is the instrument to analyze Bromwich’s motion. But no matter, ICRA adopts Fourth Amendment precedent. So the distinction has no difference.” United States v. Bromwich, 2024 U.S. Dist. LEXIS 238961 (D.S.D. Dec. 20, 2024).

On appeal from the R&R:

Even if Dillon and Flute were acting under tribal law, “[t]he Supreme Court has recognized that tribal law enforcement authorities possess ‘traditional and undisputed power to exclude persons whom they deem to be undesirable from tribal lands,’ and therefore have ‘the power to restrain those who disturb public order on the reservation, and if necessary to eject them.'” … “Because such power ‘would be meaningless if tribal police were not empowered to investigate [the undesirable conduct], tribal police must have such power.'” … Therefore, Dillon and Flute did not violate Bromwich’s Fourth Amendment right to be free from unreasonable seizure because they had the authority to investigate Bromwich’s drug possession and determine whether to eject him from the reservation.

United States v. Bromwich, 2025 U.S. Dist. LEXIS 17753 (D.S.D. Jan. 29, 2025). And, even if there wasn’t probable cause for defendant’s arrest, his active resistance was an independent crime that justified it.

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