You're assuming that undocumented persons are evenly dispersed amongst the country, and in every community, when they're not.
While you'll find undocumented persons all over the country, like any other group, there are areas of heavy concentration that account for the majority of population. And in those areas, they tend to form communities around each other.
So if the vast majority of them live within communities that comprise heavily of other undocumented migrants, those crimes that are between two and undocumented persons, are significantly less likely to be brought attention of American law enforcement.
I'm not saying never, but that is a common enough occurrence to skew those stats and make them disingenuous at best.
Again, nothing new to what I'm saying here...
Really?
So you disagree with my broad strokes explainer on undocumented population distribution?
Or do you disagree with my assertion that most perpetrators of crime victimize people in their same community?