Declarations of War and Authorizations for the Use of Military Force: Historical Background and Legal Implications [April 18, 2014] [open pdf - 851KB]
"This report provides historical background on the enactment of declarations of war and authorizations for the use of force and analyzes their legal effects under international and domestic law. It also sets forth their texts in two appendices. The report includes an extensive listing and summary of statutes that are triggered by a declaration of war, a declaration of national emergency, and/or the existence of a state of war. The report concludes with a summary of the congressional procedures applicable to the enactment of a declaration of war or authorization for the use of force and to measures under the War Powers Resolution. The report will be updated as circumstances warrant."
CRS Report for Congress, RL31133