PORT MORESBY, Papua New Guinea (AP) — A meeting of world leaders in Papua New Guinea has highlighted divisions between global powers the U.S. and China and a growing competition for influence in the usually neglected South Pacific. The 21 nations at the Asia-Pacific Economic Cooperation summit in Port Moresby struggled to bridge differences on issues such as trade protectionism, making it likely their final statement Sunday will be an anodyne document. U.S.