U.S. policymakers are studying the Canadian mortgage market, which endured a far less costly downturn during the economic recession, for ideas that could be imported in the reform of the domestic mortgage finance system. “We must find characteristics in other countries similar to our own system,” said Rep. Carolyn McCarthy, D-NY, during a hearing in the House Financial Services Subcommittee on International Monetary Policy and Trade this week. In many ways, the U.S. mortgage market is unique. The ubiquity of the 30-year fixed-rate mortgage, a standard mortgage product here, is unparalleled elsewhere. While a 30-year...