Mortgage rates in the U.S. have shown a slight decrease, with the average 30-year fixed-rate mortgage dropping to 6.79% from 6.87% the previous week. The spread between the 30-year fixed-rate mortgage and the 10-year Treasury yield narrowed to about 2.65 percentage points. The Federal Reserve's effective funds rate remained at 5.33% on March 26th and 27th. Freddie Mac reported a decrease in the 30-year fixed-rate mortgages to 6.79% on March 28th from 6.87% the prior week. Homebuyers and homeowners are monitoring these changes closely, with some relief for home buyers as rates fall slightly.