A fierce opponent of government intervention in the marketplace, Mr. Gramm, a Republican from Texas, recalled the episode during a 2001 Senate debate over a measure to curb predatory lending. What some view as exploitive, he argued, others see as a gift.

“Some people look at subprime lending and see evil. I look at subprime lending and I see the American dream in action,” he said. “My mother lived it as a result of a finance company making a mortgage loan that a bank would not make.”