Wall.
National Data Base with finger prints, picture and dna
Employer liability.
Stop access to regular free public school education at 14k each.
Stop giving anchor baby birth certificates.
Have a worker program where they come and work then leave.
Deny entrance to those that broke our laws or remove them.
More walls.
I like the use of DNA as identification but are they able to do it on a mass basis quickly?
I like your list. If committing a felony would be grounds for deportation, the lawlessness might be curtailed.
Adding retinal or ear scans.