Earlier quoted context omitted.
This is ludicrous and ill informed. To put someone in jail, typically they need to commit a crime. If someone lies about their income, and borrows money based on that information, the borrower has committed fraud, not the lender. I'll grant that it is immoral to steer someone into a loan which they probably won't be able to repay. However, unless the lender's agent materially misrepresented the loan, it is not illega…
Is it not part of the banks responsibility to be checking that these loans can realistically be repaid? Would you lend a large amount of money to someone without a job and expect to see it all back?
In the industry, the terms 'subprime' was often used interchangeably with 'home equity'. 'Home equity' was used not in the sense of the consumer borrowing 'Home Equity Lone of Credit', but rather that the basis of the loan was not the borrowers ability to pay, but rather the value of the home.
This made sense in an environment of rising home prices. No one defaults when they can just sell to get out of the loan. That was the realistic basis for the loan being repaid. (However in an environment of stagnant prices it fell apart.)