“Sorry, Keynesians. There was no discernible two or three dollar multiplier effect from every dollar the government spent and borrowed. In reality, every dollar of public-sector spending on stimulus simply wiped out a dollar of private investment and output, resulting in an overall decline in GDP. This is an even more astonishing result because government spending is counted in official GDP numbers. In other words, the spending was more like a valium for lethargic economies than a stimulant.
In many countries, an economic downturn, no matter how it’s caused or the degree of change in the rate of growth, will trigger increases in public spending and therefore the appearance of a negative relationship between stimulus spending and economic growth. That is why the table focuses on changes in the rate of GDP growth, which helps isolate the effects of additional spending.
The evidence here is extremely damaging to the case made by Mr. Obama and others that there is economic value to spending more money on infrastructure, education, unemployment insurance, food stamps, windmills and bailouts. Mr. Obama keeps saying that if only Congress would pass his second stimulus plan, unemployment would finally start to fall. That’s an expensive leap of faith with no evidence to confirm it.”