If the estimate of 6.8 millions illegals working and paying taxes is true the other 5+ million are on taxpayer money. If all are gone the nearly 100 million unemployed would easily get a job and the welfare savings would be immense.
Illegals use a huge amount of taxpayer support.
Their anchor babies entitle the whole family to financial aid.
They can live in HUD housing.
Their kids get free breakfast and lunch at school.
They get free medical care.
They are heavy users of the court and penal system.
It is actually the case that Mexican illegal alien families have far more free spending money than Americans do.