President Barack Obama faces a clear uphill battle in swaying skeptical lawmakers of the merits of military action in Syria, as top officials were dispatched to Capitol Hill Sunday to make the administration’s case. For example, Senate Democratic aides are drafting new language for an authorization of military force in Syria, Sen. Patrick Leahy (D-Vt.) said Sunday. The administration’s proposal is too open-ended — a complaint many lawmakers have — Leahy said after leaving the classified briefing. The current version wouldn’t garner his support, but he indicated that a more tightly written draft might. “I know it’s going to be...