By Matt Tracy (Reuters) - U.S. fintech companies that lend to consumers with impaired credit scores face a tough year as rising defaults and interest rates limit the companies' access to cost-effective debt financing. "We expect profitability to be depressed for many firms and funding conditions to remain challenging, as increased funding costs brought on by rising interest rates will not be offset by increases in revenue," Moody's said in a report on Thursday. It revised its outlook for such...