Congressional approval is for declaration of war. War is not going to be declared. War was never declared for iraq, aghanistan, vietnem, or korea, or any of the other little skirmishes in the last 50 years.
http://en.wikipedia.org/wiki/War_Powers_Resolution
The War Powers Resolution of 1973 (50 U.S.C. 1541–1548) was a United States Congress joint resolution providing that the President can send U.S. armed forces into action abroad only by authorization of Congress or if the United States is already under attack or serious threat. The War Powers Resolution requires the president to notify Congress within 48 hours of committing armed forces to military action and forbids armed forces from remaining for more than 60 days, with a further 30 day withdrawal period, without an authorization of the use of military force or a declaration of war.
Congress needs to be notified. So when did hostilities start and how many hours are left from the 48 and will congress authorize this little adventure?