The one people least expected
The President of China Xi Jinping
Nobody will take China serious anymore. Because several times they have banned and unbanned bitcoin. They are neither here nor there. You don't take such people serious because they can go against their words at anytime. Well for me I don't think there's any president that can pull such weight as Donald Trump is doing currently. Even if another president will pull such weight, it's still going to be a president that's coming from the United States of America. That's definitely after the administration of Donald Trump has come to an end. In the future things might be different but looking at the current situation of things globally, there is no president that can do this.