The War Powers Resolution of 1973 requires presidents to report to Congress within 48 hours of sending U.S. armed forces into hostilities or certain other situations abroad. This project creates the first publicly accessible, easily searchable database analyzing the contents of all unclassified 48-hour reports submitted to Congress since the WPR was enacted 45 years ago.Current through December 31, 2019, this database will be updated regularly. It enables us to answer key questions about presidential exercise of war powers and the constitutional balance between Congress and the President.