WASHINGTON (AP) — Federal Reserve Chair Jerome Powell on Tuesday signaled a cautious approach to future interest rate cuts, in sharp contrast with other Fed officials this week who have called for a more urgent approach. But with the unemployment rate rising, he noted, the Fed agreed to cut its key rate last week. But if the Fed keeps its rate too high for too long, “the labor market could soften unnecessarily,” he added. When the Fed cuts its key rate, it often over time reduces other borrowing costs for things like mortgages, car loans, and business loans. Powell and the Fed have been under steady attack from Trump, though Powell did not name him.