Katie Attwell1, David T Smith2. 1. Sir Walter School of Public Policy and International Affairs, Murdoch University, South Street, Murdoch, WA 6150, Australia; Present address: Political Science and International Relations, School of Social Science, The University of Western Australia, 35 Stirling Hwy, Crawley, WA 6009, Australia. Electronic address: k.attwell@murdoch.edu.au. 2. United States Studies Centre at the University of Sydney and Department of Government and International Relations, Faculty of Arts and Social Sciences, The University of Sydney, Institute Building H03, NSW 2006, Australia. Electronic address: david.smith@sydney.edu.au.