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.
Now, Donald Trump is proposing to go even further, vowing to build a massive, impenetrable wall along the U.S.-Mexico frontier to keep out illegal Mexican migrants. âBuilding a wall is easy, and it can be done inexpensively,â the Republican presidential candidate said in an interview. âItâs not even a difficult project if you know what youâre doing.ââ. [Trump to renew vow to build impenetrable wall].