Why do I describe this as an action to stimulate spending? Financial markets are in the grip of a "flight to quality" that is very much analogous to the "flight to currency" that crippled the economy in the 1930s. Everyone wants to get into government-issued and government-insured assets, for reasons of both liquidity and safety. Individuals have tried to do this by selling other securities, but without an increase in the supply of "quality" securities these attempts do nothing but drive down the prices of other assets. The only other action people can take as individuals is to build up their stock of cash and government-issued claims to cash by reducing spending. This reduction is a main factor in inducing or worsening the recession. Adding directly to reserves -- the ultimate liquid, safe asset -- adds to supply of "quality" and relieves the perceived need to reduce spending.

When the Fed wants to stimulate spending in normal times, it uses reserves to buy Treasury bills in the federal-funds market, reducing the funds' rate. But as the rate nears zero, Treasury bills become equivalent to cash, and such open-market operations have no more effect than trading a $20 bill for two $10s. There is no effect on the total supply of "quality" assets.

A dead end? Not at all. The Fed can satisfy the demand for quality by using reserves -- or "printing money" -- to buy securities other than Treasury bills. This is the way the $600 billion got out into the private sector.

This expansion of Fed lending has not violated the constraint that "the" interest rate cannot be less than zero, nor will it do so in the future. There are thousands of different interest rates out there and the yield differences among them have grown dramatically in recent months. The yield on short-term governments is now about the same as the yield on cash: zero. But the spreads between governments and privately-issued bonds are large at all maturities. The flight to quality means exactly that many are eager to trade private paper for non-interest bearing (or low-interest bearing) reserves and with the Fed's help they are doing so every day.

Could the $600 billion in new reserves be called a bailout? In a sense, yes: The Fed is lending on terms that private banks are not willing to offer. They are not searching for underpriced "bargains" on behalf of the public, nor is it their mission to do so. Their mission is to provide liquidity to the system by acting as lender-of-last-resort. We don't care about the quality of the assets the Fed acquires in doing this. We care about the quantity of its liabilities.

A great creativity I think, it is fascinating! It can be done many ways! Fed offers more carrots than sticks