SIOUX FALLS, S.D. (KELO) – The Oglala Sioux Tribe has filed a new lawsuit against the United States government. The reservation is bigger than the states of Delaware and Rhode Island combined, and the Oglala Sioux Tribe says the federal government should be doing more to keep it safe. In the new lawsuit, the tribe is suing the United States for funding for what it calls “an effective law enforcement program.” This comes in addition to a 2022 lawsuit seeking “adequate law enforcement.”