Long-awaited regulatory guidance that will set standards for the underwriting, marketing, and sale of nontraditional mortgage products will be issued soon, regulators say. But that promise may not be enough to quell lawmakers who want swift action to crack down on what many see as growing default and foreclosure risks associated with interest-only loans. At a joint hearing of the Senate Banking Subcommittees on Transportation and Housing and Economic Policy this week, Sandra Thompson, acting director of supervision and consumer...