The locations of Federal Reserve District boundaries, and of the Banks within the Districts, were determined mostly by the geographic distribution of the U.S. population at the time the Federal Reserve System was created (1913), to accommodate local needs.
Mr Trump claims the total cost of the wall will be $10bn (Â£7.5bn) to $12bn. But estimates from fact checkers and engineers seem to be universally higher. Senate Majority Leader Mitch McConnell estimated it will cost between $12-15bn, as he addressed reporters at a Republican conference in Philadelphia.
The Opinion Pages | Editorial. The Real Cost of Mr. Trumpâs Wall. President Trump speaking at the Department of Homeland Security on Wednesday. President Trump on Wednesday unveiled the first proposals to make good on his promise to make America impenetrable to unauthorized immigrants and intolerable for those who are already here.