I don't think this is accurate. The vast majority are from Mexico or South America, hence the skewed media coverage. It's the same reason you don't see Africans getting detained they make up a small number only.

It seemed plausible to me when I read it, but I’d be interested in Googling to determine its accuracy. Thanks for the comments!

It did seem that way to me as well, but facts are facts. Fact remains it is unconstitutional and aimed disenfranchising non whites. The Trump administration did this, knowing that its white voter base would be unsympathetic and disconnected from non white communities and susceptible 2 narratives