Federal regulators have yet to finalize their qualified residential mortgage rulemaking, but housing finance experts are already trying to figure out how lending is going to be affected by the interplay of the QRM rule and the qualified mortgage standard as per the CFPBs ability-to-repay rule. As the new lending environment unfolds, the liability risks associated with non-QM and QRM loans is one of the things that is particularly troublesome to some. The worse-case scenario that I worry about is that we see a repeat of what we saw in...