Edward Harrison submits:
In reading Scott Sumner’s take on the China currency peg dilemma, I see that both he and Paul Krugman hit on the fundamental problem in the debate: reserves. Everyone is talking about the peg as if relaxing the peg will be the magic bullet to America’s current account problem. But this is clearly not the case.
If China were to unilaterally revalue its currency, the Chinese would start selling dollars and buying some other currency. If the Chinese simply sold dollars for Renminbi, part of the benefits of revaluation would accrue to Chinese export competitors in Europe (principally Germany) and in Asia (depending on their currency policy response). As US economic policy would be unchanged, US imports would switch from China to its competitors without any benefit accruing to the US.