"They call her Pocahontas", Trump said.
"You're very, very special people".
However he revived the nickname during a speech he gave at the White House honouring those Navajo veterans who'd served as code talkers in the military.
The President, standing beside three Najavo code talkers and a portrait of former president Andrew Jackson, made the comment in reference to Warren's heritage, which the Democrat Senator on numerous occasions has said has Native American roots.
"Every time that Donald Trump calls me "Pocahontas"-and the media goes insane over it-he's happy that people are not focused on how he's trying to cut taxes for billionaires and giant corporations", the senator added in the email".
Referring to the concept of Trump's words being a "racial slur", Sanders said: "I think that's a ridiculous response".
But White House Press Secretary Sarah Sanders defended the president's comments after being grilled by reporters over why the president felt the need to say something "offensive" during the press briefing on Monday. "Pocahontas was a real person - her name was Matoaka", she said.
The seventh president is a source of contention for Native Americans.
"The Marines made us yell "Geronimo" when we jumped out of planes and that didn't offend me either."
And as if all this weren't insult enough, Oglala Lakota journalist and Native Sun News Today publisher Tim Giago cited Trump's tone of voice.
Q: At the event that the president just did with the Navajo code talkers, he referred to Pocahontas being in the Senate.
In his speech, MacDonald urged the creation of a museum commemorating the Code Talkers and preserving their stories for future generations of Americans.
"We have different languages, different skills, different talents, and different religion. And when we come together as one, we are invincible".
At times, the white expert seemed exasperated at having to explain to Native Americans what was a racial slur and what was not. "The prejudice that Native American people face is an unfortunate historical legacy", said Navajo Nation President Russell Begaye.
"Look, I think that Sen". Warren says she did this to try to meet people of similar heritage.