(TL;DR: can't loan that much money with a rate that low for 30 years)
(TL;DR: can't loan that much money with a rate that low for 30 years)
Also it isn't saying you should take out the .25 percent loan for 30 years it is saying you buy 30 year treasuries. I think it is assumed you can sell those treasuries back to the Fed at some point when the original loan needs to be repaid.
The real problems I see with the plan is that 1) that rate is on 30 year treasuries - so you don't get income immediately and 2) inflation may exceed the return on those treasuries.
Why not just use $3B of the $9B the fed let's you effectively print to buy 300% overpriced assets (say, mortgage bonds) from shadow companies you and your buddies own and lend the rest to whomever eg: loans for overpriced homes.
So you spent $1B on the bank, $1B on the assets and sold the assets you sold for $3B. You end up with $1B in profit (100% ROI) and who cares about what happens to the rest?
This is not an issue, because you are getting 4% on borrowed money, which means you are really getting 40% on your money.
It doesn't matter how thin the margin is, as long as you can leverage the loan with borrowed money. This is essentially what every bank does.
That's changed a bit now as the Fed has does whatever it can to increase liquidity. Less of a stigma, the discount window rate is about what the fed funds rate is, the time period of the loans is longer, etc.
So, you can borrow from the discount window (the fed) and you can do so at a rather low rate. However, the whole theory that the recent upsurge in banking profits is from buying treasuries is a bit silly.
For starters it isn't risk free to buy a 30 year treasury note when you are financing it with short term loans the rate of which could be changed at any time. If interest rates go up your 30 year treasury you bought isn't going to be worth much and may actually start to lose you money. Remember if you are 10x leveraged the market price of that 30 year treasury only has to drop a little for you to lose money. So instead, let's invest in short term treasury rates ( http://www.bloomberg.com/markets/rates/index.html) well except the return on short term treasury rates is about what you would pay at the discount window.
I guess you could invest in short term bonds or other investments, but it isn't going to be risk free then. And it really isn't a scandal that trying to set low interest rates will encourage lending/investing some of which could turn out to be speculative or would not have been made if interest rates were higher. It could also lead to inflation. Those are sort of the costs/benefits of cheap money.