>> bring democracy to libya while shredding the constitution of the united states. >> reporter: at issue, the 1973 water powers act which says if the president does not get congressional authorization 60 days after military action, the mission must stop within 30 days. the president formally notified congress about this mission in the this letter march 21st which makes tomorrow the 60-day deadline. inaction is roiling lawmakers on the left. >> he cannot continue what's doing in libya without congressional authorize zig and when a president defiantly violates the law that really undercuts our effort to urge other countries to have the rule of law. >> reporter: with rare agreement from the right. >> i mean, no more important decision than sending someone to war who could lose their life and yet we are going to have no debate on it in the people's representatives would not be allowed a debate on it? i found that really appalling and it is a terrible precedent.