WASHINGTON (AP) — Members of Congress, abruptly handed exactly the war powers many had demanded, grappled Saturday with whether to sign off on President Barack Obama’s plan to punish Syria for an alleged chemical weapons attack. Now with a stake in the nation’s global credibility, lawmakers were seeking more information about the possible consequences of striking a region without knowing what would happen next.

The debate over what action, if any, Congress might approve is in its infancy as lawmakers prepare for a public hearing Tuesday by the Senate Foreign Relations Committee. But the first contours began emerging within hours of Obama’s announcement.