This story is from March 2015, but it just came across my radar today:
Two years after Congress reauthorized the Violence Against Women Act, Native American tribes can finally take advantage of one of the law’s most significant updates: a provision that allows tribal courts to investigate and prosecute non-Native men who abuse Native women on reservations.
Starting Saturday, tribes can claim jurisdiction over non-Native men who commit crimes of domestic violence, dating violence or who violate a protection order against a victim who lives on tribal land. Until now, that jurisdiction has fallen to federal or state law enforcement, who are often hours away from reservations and lack the resources to respond. The result has effectively allowed non-Native abusers immunity from punishment.
During the preceding two years, several tribal governments worked through a pilot program with the Federal government to develop the rules and guidelines necessary to handle the complexity of sovereign arrest and prosecution of U.S. citizens by non-U.S. tribal governments and non-U.S. tribal law enforcement.
This new power will be critical to halting rampant non-native abuse and assaults of native women.