Garran, like his father, was strongly involved in the Australian Federation movement, the movement which sought to unite the British colonies in Australia (and, in early proposals, New Zealand) into one federated country. The first Constitutional Convention was held in 1891 in the chamber of the Legislative Council of New South Wales in Macquarie Street, Sydney, around the corner from Garran's chambers in Phillip Street; Garran regularly attended and sat in the public gallery to see "history... in the making under my very eyes."[6] Garran would later recall with approval that the 1891 convention was the first with the courage to face the "lion in the path", the issue of customs duties and tariffs, which had previously divided states such as Victoria, who were in favour of protectionism, and states such as New South Wales, who were in favour of free trade. In Garran's view a clause proposed at the convention, which allowed for tariffs against international trade while ensuring free trade domestically (the predecessor to the final section 92 of the Constitution of Australia), "expressed the terms on which New South Wales was prepared to face the lion."[7]