An article in the American Bar Association journal, "Tax Lawyer," contains an estimate that illegals contribute more in taxes than they cost in social services.
They contribute some $7 billion in Social Security payments.

Chidren of illegals are reported to cost $29 billion in education, but many of these children were born in the U. S. and thus are full citizens.

The illegal immigrant problem is complex and lacks easy solution; it is one faced by all countries of the world where there are jobs available.