John Kerry actually said...

ISIS is a brutal terrorist organization. It must be stopped.

If we believe that it would be useful to discuss counter-ISIL efforts with Iran, we may do that on the margins of the P5+1 talks, as we have...

While Iran has, in common with the emerging international consensus, a strong interest in seeing ISIL defeated, we remain deeply concerned a...

The President absolutely, clearly, by almost any legal standard that I can imagine is not violating the Constitution.