Democratic lawmakers in Congress are expected to force a House vote next week on a bipartisan war powers resolution that would limit President Trump's ability to take military action against Iran without congressional approval. However, in reality, even if the resolution passes the House, it still needs Senate approval, and the President can veto it. Overcoming a veto requires a two-thirds majority in both houses of Congress, a very difficult feat. In context, while only Congress has the formal authority to declare war, the President can still initiate military operations under his Commander-in-Chief authority.