 After the Bundesrat gave its unanimous approval on 18 September, the law was signed into force by the German President on 23 September 2009 and published in the official gazette on 24 September.The president signed the German instrument of ratification of the Treaty of Lisbon on 25 September 2009, after which it was deposited in Rome by the German Ambassador.Ireland ratified the Lisbon Treaty on 23 October 2009, after having initially put the whole process into doubt by rejecting the treaty in a referendum held in June 2008.