Oscar and Irma, eat in a Burger King restaurant in Mexico City, Mexico, Wednesday, April, 26, 2006.U.S. lobbyists lashed out Wednesday at the Mexican 'Nothing Gringo' campaign timed for May 1 to coincide with the 'Day Without Immigrants' boycott in the United States. Migrants and their supporters in the United States are being encouraged to skip work and school and not spend money for one day to demonstrate the migrants' importance to the U.S. economy. (AP Photo/Marco Ugarte)
People walk in and out of a McDonald's restaurant in Mexico City, Mexico, Wednesday, April, 26, 2006. (AP Photo/Marco Ugarte)
Larry D. Rubin, president of the American Chamber of Commerce in Mexico, speaks during a news conference in Mexico City, Mexico, Wednesday, April, 26, 2006. (AP Photo/Marco Ugarte)