Israel's occupation of the West bank and E. Jerusalem is illegal. It's withdrawal is both a legal and moral imperative. There's no question of the border's location, which has been effectively recognized as such by Israel since its occupation began. Therefore, any future discussion over land exchange allowing Israel to retain its large settlements along that border requires that it first recognize, respect, and commit to withdraw from within that border.
Donald Trump: Israeli settlement construction in West Bank should 'keep going' (Haaretz)