The House has passed a spending bill with a small amount for border wall funding, despite objections from Democrats. The Senate has yet to vote, as a relatively inconsequential border shutdown could happen.
The above figures assumes 12.5 million illegal immigrants in the U.S., however a Yale University study estimates the number at 22.1 million. (Journals.plos.org)
The Fiscal Burden of Illegal Immigration on United States Taxpayers (FAIRUS.org)