From left to right, Maria Ramirez, Joseline Saragoza, 9, and Marcela Saragoza. all of Phoenix, cry as they celebrate at the Arizona capitol Wednesday, July 28, 2010 in Phoenix. (AP Photo/Ross D. Franklin)

A protester holds a sign in the likeness of the US flag at a demonstration against Arizona's new immigration law outside the US embassy in Mexico City, Wednesday July 28, 2010. (AP Photo/Alexandre Meneghini)

Maricopa County Sheriff Joe Arpaio speaks about U.S. District Court Judge Susan Bolton's ruling that blocked the most controversial sections of Arizona's new immigration law from taking effect, Wednesday, July 28, 2010. (AP Photo/Matt York)

Two men illegally cross the border fence separating Nogales, Ariz., and Nogales, Sonora, Mexico, Wednesday, July 28, 2010. (AP Photo/Jae C. Hong)

The chief legislative sponsor of Arizona's immigration law state Sen. Russell Pearce, R-Mesa, speaks with the media at the Arizona Capitol Wednesday, July 28, 2010 in Phoenix. (AP Photo/Ross D. Franklin)

Protesters celebrate at the Arizona capitol Wednesday, July 28, 2010 in Phoenix, only hours after portions of Arizona's new immigration law, SB1070, was blocked by a federal judge. (AP Photo/Ross D. Franklin)

Women pray with dozens at an overnight vigil at the Arizona Capitol late Wednesday, July 28, 2010 in Phoenix, only hours after portions of Arizona's new immigration law, SB1070, was blocked by a federal judge. (AP Photo/Ross D. Franklin)

A protester holds a sign at a demonstration against Arizona's new immigration law outside the US embassy in Mexico City, Wednesday July 28, 2010. (AP Photo/Alexandre Meneghini)

A woman, who declined to give her name, is hugged by her husband as they chat between the border fence separating Nogales, Ariz., and Nogales, Sonora, Mexico, Wednesday, July 28, 2010. (AP Photo/Jae C. Hong)

After climbing a building crane, protesters hang a sign against Arizona immigration bill SB1070 and the 287(g) criminal immigrant fingerprinting system Wednesday, July 28, 2010 in Phoenix. (AP Photo/Ross D. Franklin)

Demonstrators join hands while blocking traffic before being led away by police during an immigration reform protest outside a federal building in San Francisco, Wednesday, July 28, 2010. (AP Photo/Eric Risberg)

Police lead a clergyman away after demonstrators blocked traffic during an immigration reform protest outside a federal building in San Francisco, Wednesday, July 28, 2010. (AP Photo/Eric Risberg)

In this July 22, 2010 photo, an illegal immigrant day laborer waits for work in Chandler, Ariz. (AP Photo/Matt York)

David Castillo, 3, stands with family members outside City Hall Tuesday, July 27, 2010 in Phoenix. (AP Photo/Matt York)

Ernesto Fiscal, foreground, and other illegal immigrants who were deported to Mexico early Wednesday morning, gather near the Nogales Port of Entry in Nogales, Sonora, Mexico, Wednesday, July 28, 2010. (AP Photo/Jae C. Hong)

In this Friday, April 23, 2010 file photo, with law enforcement supporters behind her, Arizona Gov. Jan Brewer signs immigration bill SB1070 into law in Phoenix. (AP Photo/Ross D. Franklin, File)