Average long-term U.S. mortgage rates tumble to 6.61%

Average long-term U.S. mortgage rates tumble to 6.61%. The average long-term U.S. mortgage rate tumbled by nearly a half-point this week, but will likely remain a significant barrier for potential homebuyers as Federal Reserve officials have all but promised more rate hikes in the coming months. Late last month, the average long-term U.S. mortgage rate…