The United States and some other members of the United Nations have been concerned in recent years about the substance of some resolutions of the General Assembly and the procedures by which they were adopted. Their concern was intensified by certain actions at the twenty-ninth session, when the Assembly sustained a ruling of its President with respect to the representation and participation of South Africa in that and future sessions, when it curbed the right of Israel to participate in the debate on the question of Palestine, when it accorded to the representative of the PLO (Palestine Liberation Organization) a treatment usually reserved to the head of a member state, and when it declared by Resolution 3210 (XXIX) of October 14, 1974, “that the Palestinian people is the principal party to the question of Palestine” and invited the PLO “to participate in the deliberations of the General Assembly on the question of Palestine in plenary meetings.”