Mortgage Lending Law

Is the sub-prime mortgage crisis a way to make housing more affordable?
Apparently the liberals have figured out how the free market works. If you get banks to lend people money to buy houses they can’t afford, these houses get built, then after the foreclosures start, the market is flooded with empty houses. The law of supply and demand requires that they be sold at a lower price, which brings down the cost of housing for everyone.
Yes, but it also makes getting a loan to buy a house nearly impossible.