It will actually save 5x that much PER YEAR, so just over President Trump’s firstt term (assuming its takes a year to build), it will save over $300 billion!
The Fiscal Burden of Illegal Immigration on United States Taxpayers (2013)
Executive Summary
This report estimates the annual costs of illegal immigration at the federal, state and local level to be about $113 billion; nearly $29 billion at the federal level and $84 billion at the state and local level. The study also estimates tax collections from illegal alien workers, both those in the above-ground economy and those in the underground economy. Those receipts do not come close to the level of expenditures and, in any case, are misleading as an offset because over time unemployed and underemployed U.S. workers would replace illegal alien workers.