“Spanish Language Training enables trainees to communicate effectively with those people they will encounter in the field who speak only Spanish. This is a critical element of the job because over 90% of the more than one million undocumented aliens apprehended each year speaks only Spanish.” ICE website.
I worked for an employer in a job that required Spanish beyond my high school “Hola” level. They taught it to me, and eventually through daily use I became fluent. I’m pretty sure ICE does the same.
Thanks. I value economy of words.