Limit loan rates to a set percentage over the cost of money for banks. For example, 2 or 3 percent. Banks make a fair profit and borrowers don't get raw deals. It could even be 2 percent for good credit people and 3 percent for medium credit. Poor credit risks don't get loans.
In addition, all outstanding loans as of (for example) Dec 31, 2011 automatically get adjusted to the higher (e.g. 3% plus cost of money) level as a one time shot.
Lower rates than the cap would be acceptable for a bank to negociate to get a customer.
This regulation would only apply to US customers spending the money in the US.



