The article discusses how tribal sovereignty is similar to the sovereignty of other states and nations. It explains that Native tribes in the U.S. have their own sovereignty, just like the country as a whole and individual states. This concept has been a part of U.S. law since the beginning, and over 500 tribes in America are federally recognized. However, the extent of tribal sovereignty is not completely clear, and it has evolved alongside the history of Native tribes in the U.S.