Herbert W. Briggs points out that while a UNPA could be established as a UNGA subsidiary body without any changes to international law, granting it the power to pass binding legislation would require UN Charter amendment or a new treaty. The UNGA plays a role in admitting, suspending and expelling UN members, approving the budget, and electing members to other UN bodies, but its powers as set forth in Chapter IV of the UN Charter are mostly advisory in nature. These include the power to "discuss," "make recommendations," "consider," "call the attention of the Security Council to situations," "initiate studies," "receive...reports," etc., as well as "establish such subsidiary organs as it deems necessary for the performance of its functions." The Charter contains no provision allowing the UNGA to delegate any powers it does not itself possess. And while Article 25 states, "The Members of the United Nations agree to accept and carry out the decisions of the Security Council," there is no requirement that members abide by the recommendations of the UNGA. On the other hand, Article 13(1)(a) of the Charter tasks the UNGA with "encouraging the progressive development of international law and its codification."