> Where does the initial iris data come from?

Visa photos. DACA applications [1]. Basically anyone who trusted the government at any point in the past.

It won't catch cartel members. But cocaine seems to be the one thing whose price this administration has driven down [2].

[1] https://en.wikipedia.org/wiki/Deferred_Action_for_Childhood_...

[2] https://www.wsj.com/world/americas/mexico-drugs-cartel-osegu... "Cocaine prices have fallen by nearly half to around $60 to $75 a gram compared with five years ago"