Who Are More Powerful?

President Obama although has his executive power to  strike Assad, but he asks US Congress  for approval, the subtly is that, the Congress impossible position, as Mr Kerry pointed out that(no so subtly), if they don;t approval and then Mr Obama would carried that attack, this would be seen as the Congress lesser, but if the Congress' OK that mean the Congress put them above the executive power!  Who is more powerful? That is question! In my view President Obama is manipulating for: 1) Protecting his positions -- sharing blames if things goes wrong,  2) Set a precedent, so in the  future no President of Unite States goes to war without check and balance!