The US constitution or congress should not be allowed to cut funding to agencies that simply afford UN constitional rights to its attending members and-or entities. This is what happened when the PLO (Government of the West Bank) was voted into UNESCO as a member).
Additional excerp based on current US policy:
And yes negotiations should continue based on US reasons and requests as a means to achieve peace between Palestine and Israel, but it should be recognized that, these negotiations, with the US as mediator, have produced very little since their inception over 20 years ago. Negotiations should also not be seen as a requirement (or replacement) for the constitutional rights that the PLO or any international entity has under the system of global governance that we call the UN.