Home prices in the U.S. are continuing to rebound – in some cases, nearing their peak before the housing market’s collapse, and in other cases, exceeding their peak. The trending data are stoking anxiety among some market observers that the American housing and mortgage markets are either already in, or dangerously close to, bubble territory. For example, the latest Home Price Index from Black Knight Financial Services now stands at an average of $256,000, up 32.6 percent from the market’s bottom and just 1.1 percent away from a new national peak, based on June 2016 residential real estate transactions. That figure is up 5.3 percent from year-ago levels. Further, home prices in six of the nation’s 20 largest states in mortgage activity reached...