No US President can move the Palestinian polity

Banging Square Pegs into Round Holes -Dore Gold

Throughout 2008, U.S. mediation on the outlines of a settlement were once again the equivalent of banging a square peg into a round hole: the territorial demands of the Palestinian leadership did not fit into the territorial space Israel could afford to vacate without compromising its minimal security needs as well as its most important historical rights, especially in Jerusalem.
From: How President Obama Can Promote Israeli-Palestinian Peace - David Pollock, Editor
(Washington Institute for Near East Policy)