Are capital controls a better response than tariffs to trade surpluses?
Core argument: The author argues the United States should intervene to reverse surplus nations' beggar-thy-neighbor policies, either by restricting their ability to dump goods into the U.S. economy through tariffs or by taxing capital inflows into the U.S. financial system.
The best response would be for the United States to intervene to reverse the beggar-thy-neighbor policies of surplus nations. This could be achieved either through restrictions on the ability of surplus countries to dump goods into the U.S. economy, for instance via the imposition of tariffs, or through restrictions on their ability to dump excess savings into the U.S. financial system, notably by taxing capital inflows. Neither approach is a perfect antidote. A system of uniform tariffs, for instance, risks imposing the same costs on countries that are more and less aggressively mercantilist. A more direct and focused alternative to tariffs is to reintroduce capital controls. Capital inflows could be controlled through a number of mechanisms, including taxes, volume restrictions, bank reserve requirements, government approvals for transactions, and limitations on investor eligibility. An effective capital inflow regulation regime would need to be flexible, allowing for benign, temporary trade imbalances that balance an increase in productive investment while penalizing short-term and speculative inflows.

