Poorer nations could suffer from U.S. efforts to slow inflation

SEOUL— U.S. officials are still scrambling to contain the highest inflation the United States has seen in decades. But the world's leading economic policymakers see another reason to worry ahead: Poorer economies could be swamped as the Federal Reserve tries to rein in U.S. prices. But tighter U.S. monetary policy will worsen those problems, because rising…