Currently 23andMe has several features that can reveal genetic evidence of Native American ancestry, although they are not considered a confirmatory test or proof of such ancestry in a legal context.
It is important to note that even if an individual in your family tree was considered to be Native American, your own DNA may not reveal the Native American ancestry because evidence is lost each generation.
The feature tells you what percent of your DNA comes from each of 31 populations worldwide. The analysis includes DNA you received from all of your ancestors, on both sides of your family. Your results may include evidence of DNA from the native peoples of North, Central, and South America. Note that this feature does not currently specify ancestry from a particular Native American group.
These reports may indicate evidence of Native American ancestry based on your maternal or paternal haplogroup assignment.