I’m not on top of the papers, but the putative Palestinian state, if it is to be remotely viable, is under substantial military occupation by a key US ally for reasons which are not wholly insane. The USA cannot do anything other than veto statehood in the UNSC without completely re-thinking their relationship with Israel.
US jews are not generally single-issue voters, but they have a long history of voting democrat and do not like this issue at all. At this point in the electoral cycle there is no way Obama is going to jettison the support of a well-organised political constituency like that.
It will take a hardline Republican president to approve Palestinian statehood, on a Nixon/China model. We are quite a few years off that being in prospect.