In May, the National Congress of American Indians (NCAI) condemned Trump's derogatory use of "Pocahontas" in his political attacks against Warren.

"The name of Pocahontas should not be used as a slur, and it is inappropriate for anyone to use her name in a disparaging manner," NCAI's statement said.

"With the election long over, we hoped that President Trump would refrain from using this name as a pejorative term and other such terms that insult Native peoples and degrade their cultures in order to score political points,” NCAI President Brian Cladoosby said in the statement.