As I said, my main concern is with their loyalty. Otherwise, most immigrant groups are hard workers and the Hispanics especially are fellow Catholics, for the most part. Highly desirable.
We do not have to get them all to make deportation effective or successful. It isn’t an all-or-nothing thing, just as enforcing criminal law isn’t. Just because our DA’s/law enforcement cannot capture and prosecute all criminals, doesn’t mean that we should not prosecute any. Same way with immigration.