"The result of QE2 has not lived up to administration, or Krugman's expectations, according to Koo. Instead, we're left with only two policy choices: protectionism and dollar devaluation, or more fiscal stimulus.
It's important here, to note, WHY QE2 doesn't work, according to Koo... essentially all that happened is that by buying up Treasuries, investors were forced to look for returns elsewhere, in places like stocks and commodities. The latter, the commodity gains, ended up slowing down the economy. What's more, QE2 has had no positive impact on bank lending whatsoever".