In it, but not of it. TPM DC
For the most part, pro-Israel hawks in this country are not supposed to allow that "Palestine" exists, but to insist that Israel is made up of the full territories conquered in both 1948 and 1967 (minus the Sinai peninsula, which was ceded back to Egypt in 1982). Furthermore, Republicans do not generally call for Israel to actually cede territory.
Thus, we have the logical foundation behind the denunciations of Obama allegedly calling upon Israel to return to the "pre-1967 borders" -- which Obama did not even actually do -- when he voiced the longstanding American policy of negotiations using the pre-1967 borders as a starting point for further adjustments.
The resolution text is available here. To be exact, it calls for a continuation of two-state negotiations between Israel and the Palestinians -- and is more focused on denouncing three things: A potential unilateral declaration of statehood by the latter; the upcoming effort to seek recognition at the United Nations; and the involvement of Hamas in the Palestinian unity government. The word "Palestine" is only used once, in a reference to the Palestine Liberation Organization.