The problem is that mixing business and law enforcement, so that quotidian commercial transactions become opportunities for criminal investigation, can and historically has lead to unintended consequences.

Quoting from a below comment:

> Replacing "undocumented immigrant" with "jew" or "same-sex couple" or "interracial couple" or "movie torrent pirate"... surely one of those substitutions triggers a reaction in even the most law-and-order out there.

> And most of those categories have been illegal in some states in the US's history.