On Guard At Border

President Bush, second right, watches a training exercise with Rodney McDonald of the U.S. Border Patrol as he tours the Federal Law Enforcement Training Center in Artesia, N.M., Tuesday, June 6, 2006.

Two Border Patrol agents walk through brush north of Laredo, Texas, Tuesday, June 6, 2006. President Bush visited the Laredo Border Patrol Sector later in the day.

Utah National Guard troops from the 116th Construction Equipment Support Company prepare to extend a wall along the U.S. border in San Luis, Ariz. on Monday, June 5, 2006. The soldiers are from the first National Guard unit along the border as part of Operation Jump Start.

Utah National Guard soldier Sgt. David Cowley, attached to the 116th Construction Equipment Support Company, examines a wall along the U.S. border in San Luis, Ariz. where his unit will help extend on Monday, June 5, 2006.

Utah National Guard troops from the 116th Construction Equipment Support Company prepare to extend a wall along the U.S. border in San Luis, Ariz. on Monday, June 5, 2006. The soldiers represent the first National Guard unit along the border as part of Operation Jump Start.

Utah National Guard Sgt. David Cowley, attached to the 116th Construction Equipment Support Company, welds a wall along the U.S. border in San Luis, Ariz. on Monday, June 5, 2006. The unit represents the first National Guard troops along the border as part of Operation Jump Start.

Heavy equipment rumbles along the U.S.-Mexico border Monday, June 5, 2006, in San Luis, Ariz., kicking up dust as National Guardsmen from Utah became the first unit to get to work under President Bush's crackdown on illegal immigration. The unit will improve a dirt road running parallel to the border, fill in gaps in fortified fencing and run wiring for new lighting to help the Border Patrol spot illegal crossers.

Heavy equipment operators from the Utah National Guard's 116th Engineer Company discuss the project as they work to improve a dirt road along the U.S.-Mexico border in San Luis, Ariz., on Monday, June 5, 2006. Military bulldozers, road graders and other heavy equipment rumbled along the Mexican border as the Utah guardsmen became the first unit to get to work under President Bush's crackdown on illegal immigration.

A U.S. Border Patrol agent patrols the fence line near San Luis, Ariz. on Monday, June 5, 2006.

A U.S. Border Patrol agent apprehends two undocumented aliens along the international border in Nogales, Ariz., Wednesday, May 31, 2006. Illegal entry into the United States continues, even as border states and Congress increase their efforts to secure entry points.

A man climbs over the international border into Nogales, Ariz., Wednesday, May 31, 2006, from Nogales, Sonora, Mexico.

An unidentified man climbs over the international border into Nogales, Ariz., Wednesday, May 31, 2006, from Nogales, Sonora, Mexico.

Minuteman volunteers build a fence along the U.S.-Mexico border near Palominas, Ariz., Saturday, May 27, 2006. Scores of volunteers gathered at a remote ranch to help a civilian border-patrol group start building a short security fence in hopes of reducing illegal immigration from Mexico.

A group of undocumented migrants, bottom, head back to the Mexico side of the U.S.- Mexico border after they were spotted by a U.S. Border Patrol agent, top left, while crossing the New River in Calexico, Calif., Monday, June 5, 2006.

Two undocumented migrants head back to the Mexico side of the U.S.- Mexico border with plastic bags containing their clothes after being found by a U.S. Border Patrol agent while crossing the New River in Calexico, Calif., Sunday, June 4, 2006.

An undocumented migrant attempts to cross the New River near the U.S- Mexico border as white toxic foams created from the river pollution float on the surface in Calexico, Calif., Sunday, June 4, 2006. The river is known as one of the most polluted rivers in North America. Public health officials along the border worry about this toxic, infested river and the people who use it as a route into the United States.