The single biggest impact the US government, or any government, can have on the economy is what it does with its own money. By creating jobs through public expenditure it stimulates local economies and creates growth.  Proponents of the baby boomer crisis theory also ignore one very significant fact – these people did not cause a financial crisis before they started working in the late sixties. It also seems unlikely that all of them will stop work as life expectancies are now much longer than in the middle of the last century and a majority can be expected to remain economically active.