That would have to be a blind Indian to hop up and mount that ugly rug.
The issue is not one of measurement error. This type of DNA analysis is based on probability, it is not determinate. Probability suggests that one segment on Chromosome 10 has been identified with a Native American halotype. Given the issues with the Native American database (mentioned on other posts), this finding is weak at best.
To improve the results, an autosomal test of Warren’s know relatives, her own family, cousins, etc. could narrow down the source of this DNA segment. The more relatives tested, the more likely that you could identify the source from genealogical records. You might even be able to attach a name to the source. Since Pocahontas lived about 10 generations before Warren, Trump could be literally right. By the way, Pocahontas was not a Cherokee. She was a Powhatan. Very few people, including Royalty, have a complete genealogy back for 10 generations and even the best genealogy is based on someone assertion that the father of a given child was a certain person. Since mothers occasionally lied for various reasons, we will never know the answer.
The point is a legal one, and certainly Elizbeth Warren lied on employment applications and did so to gain an unfairly advantage in the hiring process.