A view of the wall that separates the US and Mexico in San Ysidro, California, 27 January 2006. US Senators approved 17 May 2006, a measure for the construction of a 600-km (370-mile) triple-layered fence along the US border with Mexico, and the measure also calls for the installation of vehicle barriers on a 800-km  (500-mile) stretch of the 3200 kms (2000 mile) long frontier. / AFP PHOTO / HECTOR MATA