'The Benefits of Free Trade: Time to Fly My Neoliberal Freak Flag High!'

Brad DeLong:

The Benefits of Free Trade: Time to Fly My Neoliberal Freak Flag High!: I think Paul Krugman is wrong today on international trade. For we find him in “plague on both your houses” mode. ... [see here and here]

So I guess it is time to ... fly my neoliberal freak flag high...

On the analytics, the standard HOV models do indeed produce gains from trade by sorting production in countries to the industries in which they have comparative advantages. That leads to very large shifts in incomes toward those who owned the factors of production used intensively in the industries of comparative advantage: Big winners and big losers within a nation, with relatively small net gains.

But the map is not the territory. The model is not the reality. An older increasing-returns tradition sees productivity depend on the division of labor, the division of labor depends on the extent of the market, and free-trade greatly widens the market. Such factors can plausibly quadruple the net gains from trade over those from HOV models alone, and so create many more winners.

Moreover, looking around the world we see a world in which income differentials across high civilizations were twofold three centuries ago and are tenfold today. The biggest factor in global economics behind the some twentyfold or more explosion of Global North productivity over the past three centuries has been the failure of the rest of the globe to keep pace with the Global North. And what are the best ways to diffuse Global North technology to the rest of the world? Free trade: both to maximize economic contact and opportunities for learning and imitation, and to make possible the export-led growth and industrialization strategy that is the royal and indeed the only reliable road to anything like convergence.

So I figure that, all in all, not 5% but more like 30% of net global prosperity--and considerable reduction in cross-national inequality--is due to globalization. That is a very big number indeed. But, remember, even the 5% number cited by Krugman is a big deal: $4 trillion a year, and perhaps $130 trillion in present value.

As for the TPP, the real trade liberalization parts are small net goods. The economic question is whether the dispute-resolution and intellectual-property protection pieces are net goods. And on that issue I am agnostic leaning negative. The political question is: Since this is a Republican priority, why is Obama supporting it without requiring Republican support for a sensible Democratic priority as a quid pro quo?

That said, let me wholeheartedly endorse what Paul (and Mark) say here:

as Mark Kleiman sagely observes, the conventional case for trade liberalization relies on the assertion that the government could redistribute income to ensure that everyone wins—but we now have an ideology utterly opposed to such redistribution in full control of one party…. So the elite case for ever-freer trade is largely a scam, which voters probably sense even if they don’t know exactly what form it’s taking….