Italian lawmaker Dario Rivolta, left, walks near the Nogales border fence, Wednesday, March 31, 2004 in Nogales, Mexico. Mexico and the European Union (news - web sites) signed an agreement Wednesday to share migration information after a group of European lawmakers toured the border to find out more about the flow of illegal migrants into the United States. (AP Photo/Guillermo Arias)
Polish lawmaker Tadeus Iwinski, left, speaks with Mexican farmer Andres Portillo near the border fence, Wednesday, March 31, 2004 in Nogales, Mexico. Mexico and the European Union (news - web sites) signed an agreement Wednesday to share migration information after a group of European lawmakers toured the border to find out more about the flow of illegal migrants into the United States. (AP Photo/Guillermo Arias)
What's going on down there?