The U.S. Constitution gives Congress the power to declare war, while the president is commander in chief of the military. After the Vietnam War, Congress passed the War Powers Resolution to make sure both branches had a role when U.S. forces are sent into hostilities. The law generally requires the president to notify Congress and limits how long forces can remain in hostilities without congressional approval. The modern debate is harder because military action is often not a formal declared war. It can include airstrikes, drones, special forces, cyber operations, naval blockades, support for allies, or action against non-state groups. Critics say presidents from both parties have stretched old authorizations and vague emergency powers too far. Supporters of presidential flexibility say threats can move quickly, and Congress is often too slow or divided to manage fast military decisions. Congress has tools such as authorization, funding, oversight, and repeal, but those tools can be politically hard to use once an operation has begun. Congress keeps writing broad rules and then acting surprised when presidents stretch them. If modern military action is going to include drones, cyber tools, blockades, and short strikes, then the public deserves clearer rules for when Congress has to approve it.