Home2008 Treaties and Agreements ...Canada (08-1215.2) – Protocol Amending Convention of September 26, 1980 on Taxation hide Canada (08-1215.2) – Protocol Amending Convention of September 26, 1980 on Taxation TIAS Office of Treaty Affairs December 15, 2008 Taxation: Income Protocol amending the convention of September 26, 1980. As amended. Signed at Chelsea September 21, 2007; transmitted by the President of the United States of America to the Senate March 13, 2008 (Treaty Doc. 110-15, 110th Congress, 2nd Session); Advice and consent to ratification by the Senate September 23, 2008; Ratified by the President December 11, 2008; Exchange of Diplomatic Notes at Washington December 5 and 15, 2008; entered into force December 15, 2008. Download attachment [5 MB] Tags Canada Taxation Treaties