Bibi N has already said that Israel would agree to a ceasefire if the hostages were release and hamas put down their weapons.
The UN resolution is for unconditional "ceasefire" (surrender).
I suppose if Israel does not comply, this will "legitimize" US military action? As it might be Iraq in the first Gulf War?
US foreign policy (and not just in the Middle East) is burn the world to the ground and rule the ashes.