Perhaps, but they still are taking the hit on real estate and people on fixed incomes have both problems. Don't artificially low interest rates require an increase in the money supply? How do you solve inflation with more inflation?
Of state taxes they do. Property taxes are killer if you're not grandfathered in. Here, you either pay high taxes on your house or have taken a huge hit on your real estate value after the bubble burst. $100,000 hits. Don't low interest rates basically mimic the same situation that lead to all of the sub-prime housing problems?
Regarding interest rates and money supply. You are correct in that one typically follows the other. One of the most effective ways the Fed can increase the money supply is by creating cheap money by lowering the interest rate. In other words, by making the money which central banks and, eventually, businesses borrow less expensive to borrow, the supply does increase. This "loosening" of the money supply is often referred to as adding "liquidity" to the economy and is meant to boost the economy. So, simply put, you solve inflation by tightening the money supply (increase the Fed rate) and thereby slowing economic growth.
The sub-prime lending mess has little to do with low interest rates and everything to do with the 'securitization' of mortgages. Many years ago, it used to be that your mortgage was held by a bank (imagine that). The bank had strict lending guidelines. Then, early 1980's, along came a Salomon Brothers trader, Lewis Ranieri, who single-handedly created an industry which forever changed the way mortgages were processed. Ranieri recognized the value of holding and trading a mortgage note and Salomon Brothers was a Wall Street powerhouse which excelled at correctly valuing bonds when everyone else had such difficulty. But how do you trade Bob & Mary's 3 bedroom 2 bath home in Connecticut? You lobby the US Congress to create an association or agency which would be responsible for pooling and administering these loans. And so, today, we have GNMA, FNMA and a host of other mortgage pools thanks to Lewis Ranieri. He even managed to convince the US government to back these mortgage pools. Truly remarkable.
What does this have to do with the sub-prime debacle? Today, the bank does not hold your mortgage. Today, a mortgage broker will gladly qualify you for 3x what you should qualify for and collect a hefty fee for doing so. The fee, not surprisingly, is based upon the amount you qualify for. As you happily sign the paperwork and leave their offices, the mortgage broker quickly spins around in their swivel chair and sends your loan to Wall Street to become part of one of the mortgage pools (GNMA, FNMA, etc). It is now securitized - part of a quantifiable, tradeable approved asset class. GNMAs and FNMAs are commonly called Agency Bonds and are considered very creditworthy and very "safe" investments. Once in the market, your mortgage is, in effect, traded and used as collateral by large institutional investors (corporations, mutual funds, non-profit organizations) against their more risky investments within their portfolios. These Agency Bonds are considered so secure that investment banks will often allow the bond holders (corporations, mutual funds, etc) to leverage, or borrow cash, against their Agency Bond holdings in their investment portfolios. Up to 20x their face value!!
That's right - the loan which so many Americans should never have qualified for is being used as a hedge against larger, riskier asset classes. Billions of dollars worth of hedged investments are at stake here. I'm sure you can see where this is heading. It is the fundamental reason for this crisis. The very foundation upon which US corporations have built their investment portfolios, including their employee pension plans, is now crumbling. It is the primary reason why Congress is now being asked to intervene. Not because you lost your house, oh no, it's because major corporations are hemorrhaging cash.
The question is; who is now going to buy into a declining multi-billion dollar pool of assets? Who has pockets deep enough to bail out GNMA or FNMA? The US government is obligated to shore up the pools, but how to finance that? Increase taxes? Issue more debt in the form of government bonds? At what interest rate would someone be willing to buy our new debt issue? To whom, or to what country do we turn? Saudi Arabia. We'll pay you $100 a barrel for oil if you promise to buy our bonds at favorable interest rates so we can shore up our mess. Much easier than, say, a tax increase, for us American consumers to accept. This way, the focus turns to the Middle East as we fund our government debt load through yet another tax increase disguised in the form of higher oil & gasoline prices.