The need to elastically control money supply is one of the reasons the Fed exists. There's a great piece by NPR a few years ago on the topic where they explain

The need to elastically control money supply is one of the reasons the Fed exists. There's a great piece by NPR a few years ago on the topic where they explain the process: http://www.npr.org/sections/money/2010/08/26/129451895/how-to-spend-1-25-trillion http://www.npr.org/sections/money/2010/08/26/129451895/how-t...