; and (3) state that the effective date of withdrawal of the sovereignty of the United States and recognition of independence shall be the same as the date of the proclamation. (b) Copy of Proclamation forwarded The President of the United States shall forward a copy of the proclamation issued under subsection (a) not later than one week after signature to the presiding officer of the Constitutional Convention of Puerto Rico, the officer elected as head of state of the nation, the President pro tempore of the United States Senate, the Speaker of the United States House of Representatives, the Senate Committee on Energy and Natural Resources, and the House Committee on Natural Resources. (c) Date Government To Take Office Not later than one week after the date of receipt of the Presidential proclamation and with the advice of the officer elected as head of state of the nation, the presiding officer of the constitutional Convention shall determine the date on which the Government of the nation shall take office, and shall so notify the Governor of the territory of Puerto Rico, the President of the United States, the President pro tempore of the United States Senate, and the Speaker of the United States House of Representatives. 108. Legal and constitutional provisions Upon the proclamation of independence as provided in this title, and except as otherwise provided in this title or in any separate agreements thereafter concluded between the United States and the nation of Puerto Rico— (1) all property, rights, and interests which the United States may have acquired over Puerto Rico by virtue of the Treaty of Paris of 1898, and thereafter by cession, purchase, or eminent domain, with the exception of such land and other property, rights, or interests as may have been sold or otherwise legally disposed of prior to the proclamation of Independence, shall vest ipso facto in the nation of Puerto Rico