Let's go to the Economic Videotape and look back to 1936 (and compare it today):
The country is in the grips of the Great Depression, but has begun to recover under Roosevelt's New Deal "pump priming" stimulus plan. But Roosevelt is in a re-election fight and the Republicans have been screaming about deficit spending.
So Roosevelt agrees to an austerity package to enhance his re-election chances. (Sound familiar?)
The country's economic recovery reverses and we go into the '37 recession.
So e go back to the New Deal's deficit spending to stimulate the economy and the recovery recommences.
Then 1941. Something really big happens and the government has to spend vastly higher amounts of money in the economy and borrow to do so.
Look at the economic events - vastly increased government spending and borrowing.
The economy bounds back with the massive government spending program put into place. Yeah, it was done to fight WWII. But if you describe that period from an economic point of view - it was huge stimulus package built on deficit spending.
Are we going to have to have another World War to convince ourselves that the solution is government spending?