Even with your extreme analysis here, I'd be much more concerned with supporting the 75% and helping the 25% remove themselves from that situation.80% of illegals work at least one job.
Theres about 11-15 million illegals (depending on who you ask)
Theres 40 million black people
Are you OK with 25% of the black community facing competition for labor?
As opposed to potentially harming the 75% in order for the 25% to get more scraps.