Long-term U.S. mortgage rates inched higher this week. The benchmark 30-year rate remained above the key threshold of 4 percent. Mortgage buyer Freddie Mac said Thursday the average rate on 30-year fixed-rate home loans rose to 4.05 percent from 4.02 percent last week. The rate stood at 3.57 percent a year ago and averaged 3.65 percent in 2016, the lowest level in records dating to...