Interestingly enough both Paul Krugman and Brad DeLong have now come out in favour of NGDP level targeting. Hence, the policy recommendation from these two Keynesian giants are the same as from the Market Monetarist bloggers, but even though the Keynesians now agree with our policy recommendation on monetary policy in the US the theoretical differences are still massive. Both Krugman and DeLong stress the need for fiscal easing in the US. Market Monetarists do not think fiscal policy will be efficient and we are in general skeptical about expanding the role of government in the economy.
Despite theoretical differences it is interesting how broad based the support for NGDP level targeting is becoming among US based economists (In Europe we don’t have that sort of debate…we are just Calvinist…)