War powers resolution 1973
From Wikipedia:
http://en.wikipedia.org/wiki/War_Powers_Resolution
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.
So, has the clock started and does congress give a damn?
Very good questions. Ones every American should be asking their Congresscritters, I'm thinkin'.