The Federal Constitution of Brazil stipulates that the power to enter into contracts is vested in the President of Brazil and that these treaties must be approved by the Brazilian Congress (Articles 84, Clauses VIII and 49, Clause I). In practice, this has been interpreted as being free for the executive to negotiate and sign a treaty, but that its ratification by the president requires the prior approval of Congress. In addition, the Federal Supreme Court decided that after the ratification and entry into force of a presidential decree published in the Federal Register, a treaty must be incorporated into national legislation in order for it to be valid in Brazil and applicable by the Brazilian authorities. If the withdrawal of a State Party is successful, its obligations under this treaty shall be deemed to have ended and the withdrawal of a party to a bilateral treaty shall terminate the treaty. The main objective of the Assembly is to elaborate the rules under which individual treaties are negotiated between the Victorian Government and individual Victorian Aboriginal peoples. It will also create an independent contracting authority that will oversee negotiations between Aboriginal groups and the Victorian government and ensure fairness. [29] Australian contracts generally fall into the following categories: extradition, postal agreements and payment instructions, trade and international conventions. . . .