(Reuters) - Palestinian President Mahmoud Abbas urged the Obama administration on Saturday to impose a solution to the Middle East conflict that would give his people an independent state. ...Abbas's appeal to Obama came amid widespread media reports that the U.S. president was considering floating a proposal that would set the contours of a final peace deal. Any such move would likely be opposed by Israel, which says only negotiations can secure a final settlement to the conflict. Obama has been sharply at odds with Israeli Prime Minister Benjamin Netanyahu over Israeli settlement construction in the occupied West Bank, land...