Pop Internationalism
One of the most long-established propositions in international economics is that a 10% across the board tariff on imports, when combined with a 10% across the board subsidy to exports, would have essentially no effect in the long run. And this is true despite the fact that each policy, considered in isolation, would distort trade and reduce welfare.
The intuition here is simple. Exports are the way we pay for imports. So this combined tax and subsidy would be like the Federal Government simultaneously imposing a 10 cent tax on the purchase of gasoline, and a 10 cent subsidy on the sale of gasoline. This is why I specified the long run; in the long run all imports must be paid for by exports.
The combined tariff/subsidy policies are also very similar to a 10% devaluation of a currency. And it is well known that a 10% devaluation will not change the real exchange rate in the long run, as the domestic wage and price level would simply rise 10% in response. But in the short run wages and prices are sticky, and thus either a 10% devaluation or a 10% tariff/subsidy scheme could lead to a real currency depreciation, and hence would affect trade.
I don’t doubt that author of Pop Internationalism is well aware of what I just wrote, but I think Paul Krugman’s readers may well have misunderstood his argument:
An export subsidy is WTO-illegal. An import tariff is WTO-illegal. A deliberately undervalued currency, maintained by massive foreign exchange intervention over a period of years, is in effect a combination of an export subsidy and an import tariff.
So how can China’s actions be legal, and a US response illegal? Well, the rules on currency manipulation are written in a confusing fashion, and seem to pass the buck or maybe the yuan “” back and forth between the WTO and the IMF.
But I basically can’t believe that the fine points here can override the clear merits of the case. If China’s currency policy were two separate policies, the US would have every right to respond; arguing that by combining the policies China somehow acquires immunity is just too tricky.
I can’t tell whether Krugman is referring to legal arguments or moral arguments. There is no moral argument against a permanent tariff/subsidy combo, because it is neutral. But “clear merits of the case” seems to imply a moral argument, not a legal argument.
It is important to distinguish between arguments that policy X will cause trade distortions, and those that claim policy X will lead to trade surpluses. Trade surpluses are not caused by trade barriers; rather they occur because of high levels of private or government saving within a country. Real exchange rates (on average) reflect economic fundamentals (including government saving as a fundamental.) China is currently experiencing a higher inflation rate than the US, because that’s nature’s way of moving its real exchange rate to equilibrium when the Balassa-Samuelson effect is pushing the yuan higher but the government pegs the nominal rate. Will this process eliminate China’s trade surplus? No, because the surplus is caused by high levels of Chinese saving, not a nominal exchange rate that is out of line. Again, I think Krugman may agree with this, as in earlier posts I recall that he suggested the deeper problem is the Chinese government’s massive accumulation of foreign exchange (i.e high saving) and the undervalued yuan merely reflects that policy.
But if the real problem is Chinese government purchases of foreign exchange, which permanently depresses the real exchange rate for the yuan, then it’s hard to draw an analogy to a tariff/subsidy combination, which doesn’t have any real effects once prices and wages adjust.
The intellectually respectable case for banning tariffs and subsidies is that, in isolation, they are trade distorting. I.e., these policies should not be outlawed by the WTO because they affect trade balances, but rather because they distort trade. On the other hand, a policy of massive foreign exchange accumulation can have a long run effect on trade balances, but is not trade-distorting in the usual sense of the term.
If the WTO wants to install a set of rules that ban countries like Germany, Japan, Switzerland and Singapore from pursuing high saving rates through government policies, then by all means do so. But if they aren’t go to do so, then it is disingenuous to single out a country that is half communist and thus forced to pursue its high saving policies in a more obvious and unsubtle fashion.
What do I mean by “unsubtle?” Policies that encourage private saving are more subtle than those that involve public savings. And policies that achieve high public savings rates through budget surpluses are more subtle than policies that pursue public saving through foreign exchange accumulation. China saves money in just about the most unsubtle way possible.
But make no mistake; there are many countries who are running trade surpluses that are vastly larger than China’s on a per capita basis, or even as a share of GDP, but are not being singled out because they are much smaller, and achieve the objectives using more subtle methods.
Krugman seems to want to deputize the WTO to enforce his theory of macroeconomics in a liquidity trap, which is that there is nothing that deficit countries like the US can do (or will do?) to offset the negative impact of Chinese trade surpluses on our domestic aggregate demand.
If we are going to have the WTO and IMF doing any investigations, I’d like to see them examine whether the Fed, ECB and BOJ are artificially raising the value of the dollar, euro and yen—where value is measured against goods and services, not other currencies.
PS. Don’t respond with “in the long run we’re all dead.” I get the fact that we need more economic stimulus RIGHT NOW. I just think we’re more likely to get it from a robust price level target than a futile attempt to twist the arm of the Chinese. US stocks soared early last week on strong Chinese exports numbers. That doesn’t prove cause and effect; both items probably reflect a stronger world economy. But there is very little evidence that growing Chinese exports are what’s keeping the US depressed while many other countries are recovering rapidly. We need to look in the mirror.