One person alone (seemingly) can't do it, though Trump is aiming at single-handedly getting everyone into a shooting war over there. The big money behind paying for elections comes from the general direction of pro-Israel and fundamental-Christian groups who will hear nothing of Israel being slapped down or restricted from misbehaving.

Hillary did a remarkable job as Secretary of State, and brokered many peace deals. This one was beyond everyone's reach, and I imagine it will take a while once Trump is ousted to get back to a point where the illegal settlements can finally be discussed rationally and those individuals evicted from Palestinian territory, that will then be returned to Palestinians.