... In support of this commitment, the Department of the Treasury, with the Council of Economic Advisers, has updated our analysis of the economic effects of infrastructure investment. The new data ... as a result of BABs. The National Association of State Treasurers, the U.S. Conference of Mayors, the National League of Cities, the National Association of Counties, the Council of State Governments, ... A REPORT PREPARED BY THE DEPARTMENT OF THE TREASURY WITH THE COUNCIL OF ECONOMIC ADVISERS MARCH 23, 2012 19 Middle-Class Americans Are the Biggest Beneficiaries of Improved Infrastructure...