The Cherokees were the primary tribe that Andrew Jackson packed up and sent onto the “Trai of Tears”. There is still a Cherokee reservation on the North Carolina side of Smoky Mountain National Park. The delegate would be a reminder that tribes, like the Cherokees, are sovereign nations within the United States.
Sovereign? Do they have passports? Does any other nation or international organization recognize them as such? (The U.S. does not recognize Taiwan as a sovereign.) I would say that they are subordinate to the U.S. Government and dependent on it. Otherwise, why would they consider sending a representative to Congress?
The Cherokee and most of the “5 Civilized Tribes” turned on the settlers and allied with the British, in the War of 1812.
Thousands of settlers were slaughtered, along the frontier, at the behest of the British, after years of living peacefully with the Whites.
After America won the war, it was felt that the once peaceful coexistence would not return.