"The Department of Justice (DOJ) reports from the latest available data that from 1992 to 2001 American Indians experienced violent crimes at more than twice the national rate. The Department of the Interior (DOI) and DOJ provide support to federally recognized tribes to address tribal justice issues. Upon request, GAO analyzed (1) the challenges facing tribes in adjudicating Indian country crimes and what federal efforts exist to help address these challenges and (2) the extent to which DOI and DOJ have collaborated with each other to support tribal justice systems. To do so, GAO interviewed tribal justice officials at 12 tribes in four states and reviewed laws, including the Tribal Law and Order Act of 2010, to identify federal efforts to assist tribes. GAO selected these tribes based on court structure, among other factors. Although the results cannot be generalized, they provided useful perspectives about the challenges various tribes face in adjudicating crime in Indian country. GAO also compared DOI and DOJ's efforts against practices that can help enhance and sustain collaboration among federal agencies and standards for internal control in the federal government."

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