Yeah, and everyone before him...Screw that it's a stupid idea.
Just how is one president bound by decisions of his predecessors, just as any legislative body is not bound by the actions of any prior legislative body (except for a Constitutional Amendment)?
Besides, just how many "Palestinian states" do they need?
Most of the area is traditional "Palestine" (an area) including Lebannon, part of Syria, part of Jordan and, oh yeah, Israel.
Bush 43 was the first President to adopt the two state solution as official US policy.