This article details a national study of U.S. K-12 civics and government state-mandated standards, drawing specific attention to how Indigenous nationhood and sovereignty are represented. Utilizing QuantCrit methodologies informed by Tribal Critical Race Theory, this study makes visible colonial logics embedded within state civics and government standards that normalize the erasure of Indigenous nationhood, or that subtly and discursively erase Indigenous nationhood in other ways. Additional attention is also given to states that explicitly affirm contemporary Indigenous nationhood and sovereignty within the standards. By examining the ways state standards erase and/or affirm Indigenous nationhood and sovereignty, our hope is to support Indigenous and allied educators in their collective efforts to transform standards in their respective states to more responsibly reflect and support Indigenous nationhood and sovereignty.