3. 4. 5.  he present Covenant shall be open to accession by T any State referred to in paragraph 1 of this article. Accession shall be effected by the deposit of an instrument of accession with the Secretary-General of the United Nations. The Secretary-General of the United Nations shall inform all States which have signed the present Covenant or acceded to it of the deposit of each instrument of ratification or accession. Article 27 1. 2.  he present Covenant shall enter into force three T months after the date of the deposit with the Secretary-General of the United Nations of the thirty-fifth instrument of ratification or instrument of accession. For each State ratifying the present Covenant or acceding to it after the deposit of the thirty-fifth instrument of ratification or instrument of accession, the present Covenant shall enter into force three months after the date of the deposit of its own instrument of ratification or instrument of accession. 3. Article 30 Article 28 The provisions of the present Covenant shall extend to all parts of federal States without any limitations or exceptions. Article 29 1. 2. to the States Parties to the present Covenant with a request that they notify him whether they favour a conference of States Parties for the purpose of considering and voting upon the proposals. In the event that at least one third of the States Parties favours such a conference, the Secretary-General shall convene the conference under the auspices of the United Nations. Any amendment adopted by a majority of the States Parties present and voting at the conference shall be submitted to the General Assembly of the United Nations for approval. Amendments shall come into force when they have been approved by the General Assembly of the United Nations and accepted by a two-thirds majority of the States Parties to the present Covenant in accordance with their respective constitutional processes. When amendments come into force they shall be binding on those States Parties which have accepted them, other States Parties still being bound by the provisions of the present Covenant and any earlier amendment which they have accepted.  ny State Party to the present Covenant may propose A an amendment and file it with the Secretary-General of the United Nations. The Secretary-General shall thereupon communicate any proposed amendments 18 Irrespective of the notifications made under article 26, paragraph 5, the Secretary-General of the United Nations shall inform all States referred to in paragraph I of the same article of the following particulars: (a) Signatures, ratifications and accessions under article 26; (b) The date of the entry into force of the present Covenant under article 27 and the date of the entry into force of any amendments under article 29. 19