They are ignoring the fact that illegals are illegals. 20+ million ready made criminals.
Exactly. They committed a crime the minute they crossed the border, irrespective of whether they committed any subsequent ones.
As for legal immigrants - those who followed all the rules, perhaps in the hope of becoming citizens - yeah, not so likely to commit crimes. Two legal immigrants, both college professors (from S. Africa and Canada), live up the street from me. I'm sure they're keeping their noses clean, so to speak.