It is possible on a low house bird, shooting from position 7, one might shoot with the gun that low, but his standing position is so poor for the shot that it would be impossible to make the double.
Possible he is shooting sporting clays and I suspect that the White House people that released the picture and Obama himself, don’t have a clue what the difference is between skeet, trap, and sporting clays.
I don’t think it was skeet, trap, or sporting clays, they just wanted a picture of him shooting a gun. Seeing no vest or pouch tells me it was a one pull of the trigger thing and let’s get the hell out of here. No doubt it was a dummy load to boot.