Safety and convenience in cross-border travel : an analysis of the Western Hemisphere Travel Initiative : hearing before the Subcommittee on Western Hemisphere, Peace Corps and Narcotics Affairs of the Committee on Foreign Relations, United States Senate, One Hundred Ninth Congress, first session, June 9, 2005.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2006.