By Howard Schneider and Ann Saphir WASHINGTON (Reuters) - The Federal Reserve, goaded by the risk of rising unemployment, reduced interest rates on Wednesday for the first time since December and indicated more cuts would follow to halt any slide in a labor market already experiencing higher joblessness among Blacks, a declining workweek, and other signs of weakness. The decision moves in a direction called for by President Donald Trump, but falls far short of the steep cuts in borrowing costs that he ha ...