Massachusetts Sen. Elizabeth Warren cares a lot about making student loans affordable—and she happens to be a bankruptcy expert. This week, she turned that passion and that wealth of knowledge on Richard Hunt, president and CEO of the Consumer Bankers Association.

You would think bankers would learn not to try to get sneaky in response to Warren's pointed questioning. But this one had not learned that. Then again, what else is Hunt going to do to defend practices that leave parents struggling with the student loan debts of their dead children?