Are capital inflows to the US driven by conditions abroad?
Core argument: Pettis argues capital flows into the US in both good times and bad and that US deficits are almost permanent, disputing Krugman's account that late-1990s and early-2000s US productivity gains attracted foreign investment.
We disagree on what drives capital inflows. Krugman argues that rising US productivity in the late 1990s and early 2000s attracted foreign investment, and this is how economics should work: the US economy does well, imports capital, and runs deficits. However, I disagree. Capital flows into the US not just in good times, but also in bad, and US deficits are almost permanent, not reflecting US economic conditions. Another issue is the role of Asia. While China’s economy grew faster than the US’s, it had no capital inflows and instead exported large amounts of capital, which contradicts economic theory. This was due to policy interventions in China, like capital controls, an undervalued currency, and government-managed credit allocation. These conditions forced China to export capital, mostly to the US, even as the US economy weakened by 2005-06. Thus, foreign capital inflows to the US were more about conditions abroad than US performance, including the post-Asian Crisis reserve accumulation by developing countries. The US economy still had to adjust to this imbalance.


