A different point of view...
The census allows you to mark your race (Black, white, Indian or whatever)...in addition, it allows you to mark "tribal affiliation or nationality (because tribes are not races, but political groups)...

I know that if you are a citizen of the Creek Nation and live in California, and you mark on your census, "MuscogeeCreekNation"...it does not bring the Creek Nation in Oklahoma one nickel..though it might help funding for urban Indian programs...but beyond all of that...these records will not be available for 70 years...as in the 1930, 1920, 1910, etc...I think people should mark what they believe is best for there families, however, when my family descendants are researching records 70 years from now, I hope they find what I mark useful to whatever situation they need...just like I have done when I found my ancestors on the 1900, 1910, 1920 and 1930 census...please lets not forget the genealogy and history tool these records become over the next century...

One other thing to Wotko70...the Muscogee Nation of Florida is not a federally recognized tribe, they were denied by the Feds...however, they still have there state recognition.