Cheap shot #1
I notice that Paul Krugman is now saying fiscal stimulus was never tried. That’s right; America didn’t do any fiscal stimulus. Funny, I seem to recall he argued that fiscal stimulus was responsible for the relatively fast RGDP growth of 2009:Q4. (BTW, people really ought to look at NGDP when evaluating stimulus, although on a quarterly basis the two measures are fairly closely correlated.)
Cheap shot #2:
I notice that Krugman defends his “no stimulus” argument with a graph showing government expenditures. I guess that’s OK, as in earlier posts he suggested that tax cuts weren’t very effective stimulus. On the other hand, Mark Thoma recently made the following claim:
It’s particularly amusing to see people saying that QEII raised employment in January when we know good and well that there are substantial lags in the policy process and it would be very unusual for monetary policy to work that fast. It would be just as easy to point to the recent tax cuts that Congress (surprisingly) put into place and give those credit for recent employment gains.
Keynesians like to act like there is some sort of rigorously scientific model behind their calls for the government to waste hundreds of billions of dollars. Now we find that two of the top Keynesian commentators don’t even agree on whether tax cuts count as stimulus. If they don’t, Thoma’s point is flat out wrong. If they do, Krugman’s post is completely inaccurate.
[BTW, Thoma is doubly wrong about monetary lags. He confuses peak effect, often estimated at 6 to 18 months, with some effect, which occurs almost immediately after major monetary shocks. He also fails to mention that the effects should begin when the policy was expected (September/October 2010), not when it was announced (November.) And finally he ignores the fact that we know from TIPS market responses to rumors of QE2 that the policy does raise inflation expectations.]
Substantive criticism of Keynesianism:
In early 2009 Democrats had the sort of lopsided control of the federal government (House, Senate, and Presidency) that occurs only rarely (and that the GOP hasn’t seen since the 1920s.) Alex Tabarrok points out that (according to Krugman) this aligning of the political stars produced no fiscal stimulus at all. He suggests that Keynesian policies may not be politically feasible. Of course you could do counterfactuals and talk about how it would have been even worse under the GOP. I doubt it; I think the GOP would have done big tax cuts, which while not particularly effective, are (contra Krugman) slightly more effective than more spending.
But let’s put that issue aside. The bigger problem is that Krugman’s new argument makes it extremely likely that the $1.3 billion trillion stimulus package that he preferred, that the Keynesian models suggested was needed, would also have been a giant flop.
Let’s start from the fact that if we had no stimulus after Congress passed an $800 billion dollar package, it suggests a $1.3 trillion package would have produced an extra $500 billion stimulus, at best. But even this is an overstatement, as the federal government has trouble spending money quickly on shovel-ready projects. In all probability, some of the extra $500 passed by a pro-Keynesian Congress would have been tax cuts. And Krugman consistently argues that tax cuts aren’t very effective; indeed in the new post he implies they don’t count at all as stimulus.
But it’s even worse. The somewhat bigger stimulus (probably only an extra $200b to $300b in actual spending) surely would not have had a major effect on the unemployment rate, which was 9.8% when QE2 was announced in November. But Krugman has also argued that the effect of withdrawing stimulus is contractionary. So if we assume the extra stimulus was piled on to the existing stimulus in 2009 and 2010, output would have showed the same pattern, rising during months where there was more stimulus, and falling as the stimulus slowed down. The recovery would have been modestly stronger in 2009 (assuming fiscal stimulus works and isn’t neutralized by the Fed) but there would still have been a relapse in 2010 after the peak spending period, and thus it would have failed to make a major long term dent in unemployment. By November 2010 we’d have been pretty much where we actually were, with perhaps slightly lower unemployment.
Krugman likes to point to the “50 Little Hoovers,” but what he is really doing is pointing to 50 little flaws in the Keynesian model. If the cutbacks in state and local spending reflect declining revenues due to the recession, then the Keynesian model needs to treat them as endogenous, just as business investment falls endogenously due to weak sales and excess capacity. In order to be exogenous, it would have had to be under the control of the (Federal) policymakers who make the decisions about the size of the fiscal package. But Keynesians seemed to greet the news of huge S&L spending cutbacks with surprise and dismay. And then they used it as an excuse for the federal stimulus not working. That’s about as logical as blaming the failure of Federal stimulus on corporations cutting back on investment (something FDR did in the 1930s, showing that logic has never played much of a role in arguments over government stimulus.)
Krugman says that Obama’s stimulus package failed. He’s right. He says it was too small. Maybe. But what he doesn’t say is that if the Keynesians had gotten the $1.3 trillion package they asked for, it too would have failed. In the US it is politically difficult, maybe impossible, to enact the sort of fiscal stimulus that might have made a big difference.
My critics could point out that it is also politically difficult to get adequate monetary stimulus, after all, even Helicopter Ben wasn’t able to do very much. That’s a good argument. But there is one very important difference between monetary and fiscal stimulus. Even the most clumsy monetary stimulus (QE) has a relatively low expected cost (a possible capital loss on Treasury securities purchased by the Fed.) More effective types of stimulus such as lower IOR, higher inflation targets, level targeting, etc, don’t even have that cost. Fiscal stimulus is quite expensive, in terms of the deadweight cost of future taxes. From that perspective, monetary stimulus is the clear winner.
Are there any economists who still think doing more monetary stimulus in 2008, as NGDP was falling at the fastest rate since 1938, would have been a mistake? Several respected Austrian economists that I have spoken with suggest that in late 2008 more monetary stimulus would have been appropriate.
Next time we slide into a steep downturn, should we try an even bigger fiscal stimulus, or do monetary “level targeting?” I think the answer is obvious, now it’s all about convincing the profession as a whole.
PS. I define “cheap shot” as argument for which I know a good rebuttal.
PPS. The original version attributed a link to Tyler Cowen instead of Alex Tabarrok. My apologies to Alex.