“The President does not have power under the Constitution to unilaterally authorize a military attack in a situation that does not involve stopping an actual or imminent threat to the nation” – Barack Obama, 20 December 2007
Seems like opinions have changed.
Whatever you think of the current Libyan kerfuffle and U.S. intervention (and I do have thoughts, but none that I’ll get into presently) there was clearly time for the president to make the case for military action to the Congress and get Congressional approval. This would have been consistent with Obama’s own understanding of the authorities and powers granted to each branch under the Constitution.
Perhaps the Constitution should only serve as a means to bind the power of the government when the wrong party has control.