Santos does not offer neutral commentary, but he claims to offer objective commentary: it is objectively possible that public policy and immigrant policies will negatively affect the census. You can't discount that possibility and ignore the arguments made in favor of that possibility (read the article!) just because you don't like someone's politics.

I'm not discounting the possibility. But even if he's right on every objective question and we agree with his value judgments, a claim that we need immigration policy reform is inherently political, and we need to acknowledge that in order to effectively understand the situation.