WASHINGTON A recent U.S. employment report confirmed "signs of fragility" in the labor market , a senior central bank official said, backing three interest rate cuts this year to guard against further weakening. In remarks to a summit in Colorado, Federal Reserve Vice Chair for Supervision Michelle Bowman called for a "proactive approach" in lowering the benchmark lending rate. Doing so "would help avoid a further unnecessary erosion in labor market conditions" and reduce the chance that the