Irland, 2. Oktober 2009 : Vertrag von Lissabon

"Article 29.4
...
3. The State may become a member of the European Coal and Steel Community (established by Treaty signed at Paris on the 18th day of April, 1951), the European Economic Community (established by Treaty signed at Rome on the 25th day of March, 1957) and the European Atomic Energy Community (established by Treaty signed at Rome on the 25th day of March, 1957). The State may ratify the Single European Act (signed on behalf of the Member States of the Communities at Luxembourg on the 17th day of February, 1986, and at the Hague on the 28th day of February, 1986).
4. The State may ratify the Treaty on European Union signed at Maastricht on the 7th day of February, 1992, and may become a member of that Union.
5. The State may ratify the Treaty of Amsterdam amending the Treaty on European Union, the Treaties establishing the European Communities and certain related Acts signed at Amsterdam on the 2nd day of October, 1997.
6. The State may exercise the options or discretions provided by or under Articles 1.11, 2.5 and 2.15 of the Treaty referred to in subsection 5 of this section and the second and fourth Protocols set out in the said Treaty but any such exercise shall be subject to the prior approval of both Houses of the Oireachtas.
7. The State may ratify the Treaty of Nice amending the Treaty on European Union, the Treaties establishing the European Communities and certain related Acts signed at Nice on the 26th day of February, 2001.
8. The State may exercise the options or discretions provided by or under Articles 1.6, 1.9, 1.11, 1.12, 1.13 and 2.1 of the Treaty referred to in subsection 7 of this section but any such exercise shall be subject to the prior approval of both Houses of the Oireachtas.
9. The State shall not adopt a decision taken by the European Council to establish a common defence pursuant to Article 1.2 of the Treaty referred to in subsection 7 of this section where that common defence would include the State.
10. No provision of this Constitution invalidates laws enacted, acts done or measures adopted by the State which are necessitated by the obligations of membership of the European Union or of the Communities, or prevents laws enacted, acts done or measures adopted by the European Union or by the Communities or by institutions thereof, or by bodies competent under the Treaties establishing the Communities, from having the force of law in the State.
11. The State may ratify the Agreement relating to Community Patents drawn up between the Member States of the Communities and done at Luxembourg on the 15th day of December, 1989.

4. Ireland affirms its commitment to the European Union within which the Member States of that Union work together to promote peace, shared values and the well-being of their peoples.
5. The State may ratify the Treaty of Lisbon amending the Treaty on European Union and the Treaty establishing the European Community, signed at Lisbon on the 13th day of December 2007 (“Treaty of Lisbon”), and may be a member of the European Union established by virtue of that Treaty.
6. No provision of this Constitution invalidates laws enacted, acts done or measures adopted by the State, before, on or after the entry into force of the Treaty of Lisbon, that are necessitated by the obligations of membership of the European Union referred to in subsection 5 of this section or of the European Atomic Energy Community, or prevents laws enacted, acts done or measures adopted by—
    i. the said European Union or the European Atomic Energy Community, or by institutions thereof,
    ii. the European Communities or European Union existing immediately before the entry into force of the Treaty of Lisbon, or by institutions thereof, or
    iii. bodies competent under the treaties referred to in this section,
from having the force of law in the State.
7. The State may exercise the options or discretions—
    i. to which Article 20 of the Treaty on European Union relating to enhanced cooperation applies,
    ii. under Protocol No. 19 on the Schengen acquis integrated into the framework of the European Union annexed to that treaty and to the Treaty on the Functioning of the European Union (formerly known as the Treaty establishing the European Community), and
    iii. under Protocol No. 21 on the position of the United Kingdom and Ireland in respect of the area of freedom, security and justice, so annexed, including the option that the said Protocol No. 21 shall, in whole or in part, cease to apply to the State,
but any such exercise shall be subject to the prior approval of both Houses of the Oireachtas.
8. The State may agree to the decisions, regulations or other acts—
    i. under the Treaty on European Union and the Treaty on the Functioning of the European Union authorising the Council of the European Union to act other than by unanimity,
    ii. under those treaties authorising the adoption of the ordinary legislative procedure, and
    iii. under subparagraph (d) of Article 82.2, the third subparagraph of Article 83.1 and paragraphs 1 and 4 of Article 86 of the Treaty on the Functioning of the European Union, relating to the area of freedom, security and justice, but the agreement to any such decision, regulation or act shall be subject to the prior approval of both Houses of the Oireachtas.
9. The State shall not adopt a decision taken by the European Council to establish a common defence pursuant to Article 42 of the Treaty on European Union where that common defence would include the State."