Pay attention to the wording
>The order blocks the property and interests in property of persons listed in the Annex to the order. It also blocks the property and interests in property of any foreign person determined by the Secretary of the Treasury, in consultation with the Secretary of State and the Attorney General
I doubt Clinton & Obama could be considered "foreign person(s)" though maybe if it is let out/proven he doesn't have US citizenship. Not sure if it would apply to Soros, who apparently has dual citizenship.