President Bush is to visit the western U.S. state of Arizona Monday to give a speech on illegal immigration.
White House officials say Mr. Bush's speech in Tucson will focus on border security, enforcement and a temporary worker program. He will travel to El Paso, Texas on Tuesday to discuss the same issues.
In January, the president proposed a temporary worker program that would match foreign workers with U.S. employers when no Americans can be found to fill the jobs. The immigrants would be allowed to work in the United States for up to six years.
Supporters of the proposal say it will create incentives for legal immigration and boost the economy. Critics of the program say it is a form of amnesty for people who enter the country illegally.