@emptywheel could this article be relevant to your question who helped 45 weaponize immigration? It’s possible it isn’t just one person but a concept embraced by a few advisors you mentioned. Just a guess.https://twitter.com/melissahbuckner/status/1008446139929120768 …
As I noted in my post, Miller is a good choice. Except for the fact that he's inept, even his speechwriting, and Trump's delivery of that line was not.