In this photo provided by the Oklahoma Department of Corrections, Patrick Dwyane Murphy is pictured in a photo in McAlester, Okla., dated July 8, 2004. Murphy, a 49-year-old member of the Muscogee (Creek) Nation on death row, had his conviction and death sentence tossed by a federal appeals court.(Oklahoma Department of Corrections via AP)

OKLAHOMA CITY (AP) - Patrick Murphy[1] was convicted of killing a fellow Muscogee (Creek) Nation man in 1999 and was sentenced to die. Prosecutors say he mutilated George Jacobs and left him to bleed to death on the side of a country road about 80 miles southeast of Tulsa.

In a decision that many believe could radically redefine criminal jurisdiction across a huge swath of Oklahoma, though, a federal appeals court overturned the conviction last year. It determined the case should have been tried in federal court, not state court, because the crime occurred on land assigned to the tribe before Oklahoma became a state and Congress never formally disestablished the tribal borders even though the land long ago stopped being a reservation.

The U.S. Supreme Court agreed to hear the state’s appeal of the ruling this fall, but other Native American inmates and defendants in Oklahoma have already begun appealing their convictions or asking for their cases to be dismissed on the same jurisdictional grounds. State and federal officials warn, too, that if the ruling stands, it could have far-reaching effects on areas beyond criminal jurisdiction, including tax collection and property rights.

“If not corrected, the decision … could result in the largest abrogation of state sovereignty by a federal court in American history,” Oklahoma’s attorney general, Mike Hunter, wrote in asking the Supreme Court to look at the ruling.

The ruling could have a big effect on tribal members in Oklahoma, but not elsewhere, because of how tribal land was treated as Oklahoma transitioned from territory to state.

Many of the 38 Oklahoma-based tribes were driven from their ancestral homelands and resettled on sweeping tracts of land in what later became the state, including most of what is now eastern Oklahoma. The Creek Nation’s territory, alone, encompassed more than 3 million acres, including most of what became the state’s second-largest city, Tulsa.

As settlers continued to expand westward, the federal government took back much of that land through forced allotment, a policy aimed at transforming communally owned tribal land to individual parcels owned by tribal members. Lands the government determined to be “excess” were sold on the open market or allowed to be settled by non-Native Americans.

In its ruling last year, the appeals court in Denver determined that because Congress never formally disestablished the Creek Nation’s original tribal boundaries, the land in McIntosh County where Jacobs was killed is still under the jurisdiction of tribal or federal authorities for crimes involving tribal members.

Although the ruling is specific to Murphy[2]’s case and Creek Nation territory, legal experts say it could be applied to cases involving other members of tribes whose boundaries also weren’t formally disestablished by Congress....

If the ruling is allowed to stand, the number of felony indictments based on Oklahoma Indian country jurisdiction could jump from three cases in 2017 to more than 500 per year, the U.S.

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