If he wants to destroy the reputation of treasuries, make it all seem unstable and risky, then the wheels would start to come off. Foreign treasury interest would decline, interest rates would increase.
Sorry for trying to find some semblance of intelligence in this, it's just too brazenly stupid on the surface, so I start turning over in my mind, looking for Some ulterior motive.
I can see your point, but I still think Obama and his minions are dumb as dirt worthless bastards when unscripted, with the MSM doing its' best and working overtime to cover their tracks.