Just in case we're about to go down that road, here's the FAQ on Slavery vs Indenture and "Irish Slavery".

I have read that there were enslaved American Indians, is this inaccurate?

Because slaves were so often subject to rape by their masters, it was possible for some descendants of slaves to pass as white, and it was therefore possible for anyone, of any race, to be sold into slavery due to made up accusations about their ancestry. Sally Muller is one example. She was a German immigrant who was kidnapped at a young age and sold into slavery. In the legal battle for Muller's freedom, the defense tried to prove that her mother had been a slave, but they couldn't.

hi! you may be interested in this post,

• This may be a better question for lawyers than historians, but was it ever legal to own non-black slaves in the U.S.?

and these previous discussions on the enslavement of aboriginal peoples

• Were any Native Americans enslaved?

• Why did Africa become the de facto source for slaves in the Americas? Was there ever an effort to enslave Native Americans?

• Why did Americans not enslave the First Nations peoples?

• Why did the Europeans (and north Americans) use African slave labour and not slaves from other parts of the world?

• Why did the early US go to the trouble and expense of importing slaves from Africa instead of just enslaving the Native Americans?

more recent history

• Why have the North American natives been driven off or murdered rather than being employed as peons and as mine slaves like, for example, the natives of Bolivia and of Peru?

• How were native americans able to resist slavery in North America? Considering the cost of importing slaves from Africa why wasn't the enslaving of natives much more widely practiced?

• Did the enslavement of Native Americans still exist at all in the late 18th to mid 19th centuries in the New World?

Just to be clear, you're asking about the period post-1776?