Trump has 3 or 7 more years to become the "worst president of the last century" so give it some time. The judgement, by definition, cannot be rendered yet except for the irrational, the dishonest or the plain haters. Obama on the other hand can be judged and Trump would need to pass him on the track to earn your award. He left both his own country and the Middle East literally in flames and will be judged accordingly by history.