News media have for months barraged consumers with news of “record-breaking mortgage rates,” but some observers are confounded that the refinancing market isn’t exploding with consumers looking to take advantage of the historically low rates. Analysts at Barclays Capital chalk it up to originators setting higher mortgage rates for borrowers refinancing their homes than those purchasing a home, which might be a sign of capacity constraints. The purpose of the Federal Reserve’s Operation Twist is, in great part, to place more money in the pockets of borrowers in an attempt to stimulate greater activity in the housing market. However, much of...