Trump can't use FEMA's wireless alerts to send personal messages — it's illegal
Public concern around privacy and abuse of power is offset by legislation put into place to deter any president from mishandling the alert system.
https://www.nbcnews.com/tech/tech-news/trump-can-t-use-fema-s-wireless-alerts-send-personal-n910676?cid=sm_npd_nn_tw_ma