Which policy can reduce the trade deficit without harming growth?
Core argument: A tax on capital inflows, as suggested by Pettis, would weaken the dollar, tax imports and subsidize exports, and push domestic interest rates above foreign rates, encouraging saving while reducing investment.
Different policy directions could, in principle, deliver palpable effects on the trade balance and on manufacturing. One is to tax capital inflows, as suggested by Pettis. A capital inflow tax would weaken the dollar, taxing imports and subsidizing exports, and it would raise the domestic interest rate above foreign rates, encouraging saving while reducing investment. Along with concomitant effects on the liquidity of U.S. financial markets, the macro effects on saving and investment could be harmful to long-term growth, as well as contractionary in the short run. [Another] route would be a Fed cut in interest rates. Unless the U.S. economy moves into recession, a substantial interest rate cut now would be inflationary, not only undesirable in itself. It would also erode the extent to which the dollar’s nominal depreciation was a real depreciation. And without real depreciation, there would be no durable boost in the trade balance or manufacturing employment. A final option that would weaken the dollar, spur employment in tradable industries, and reduce the trade deficit is fiscal restraint. This would have the collateral benefit of mitigating the biggest risk on the U.S. external balance sheet

