SB 1070

Claudia Perez, of Mesa, holds a sign along Main Street during a anti SB1070 protest in Mesa, Friday, April 30, 2010.

SB 1070 Repeal Effort

Martin Chavez, left, screams at Manuel Martinez during rallies for and against SB 1070 at the state Capitol. Chavez supports the law giving police more power to detain and arrest illegal immigrants. (Capitol Media Services file photo by Howard Fischer)

SB 1070 Repeal Effort

Martin Chavez, left, screams at Manuel Martinez during rallies for and against SB 1070 at the state Capitol. Chavez supports the law giving police more power to detain and arrest illegal immigrants. (Capitol Media Services file photo by Howard Fischer)

SB 1070 appeal

Senate President Russell Pearce explains Monday why he thinks the hardships Arizona faces from illegal immigration should allow the state to start enforcing an immigration law approved last year but placed on hold by a federal judge. With him are Attorney General Tom Horne and Gov. Jan Brewer.

SB 1070 protests

Protesters gather in downtown Phoenix across the street from the offices of Maricopa County Sheriff Joe Arpaio. The sheriff has been the focus of demonstrations because of his active role in seeking out illegal immigrants. (File photo by Capitol Media Services)

SB 1070 protests

San Diego resident Martin Eder works on a hand-made sign Thursday as demonstrators gather across the street from the offices of Maricopa County Sheriff Joe Arpaio. "I drove all night to get here," he said, part of a caravan of cars with foes of Arizona's new law targeting illegal immigrants.

SB 1070 protests

Protesters gather in downtown Phoenix across the street from the offices of Maricopa County Sheriff Joe Arpaio. The sheriff has been the focus of demonstrations because of his active role in seeking out illegal immigrants.

Day laborers and SB 1070

Day laborers sit along a street in the Town of Guadalupe as a Maricopa County Sheriff's Office deputy drives by, Friday, July 23, 2010. The town was subject to MCSO raids before.

SB1070 march

Carlos Garcia, an organizer with Puente, talks about this weekends march against SB1070, Wednesday, May 26, 2010, out in front of the State Capitol in Phoenix.

SB 1070: A Year Later

SB 1070 one year later

Nino Mihilli stands inside his families business, Mama Mia Market in Chandler, Tuesday, April 12, 2011. Mihilli has seen a decrease in business ever since 2007 with the State of Arizona's immigrant issues.[Tim Hacker, Tribune]

SB 1070 one year later

Nino Mihilli stands inside his families business, Mama Mia Market in Chandler, Tuesday, April 12, 2011. Mihilli has seen a decrease in business ever since 2007 with the State of Arizona's immigrant issues.[Tim Hacker, Tribune]

SB 1070 one year later

Nino Mihilli stands inside his families business, Mama Mia Market in Chandler, Tuesday, April 12, 2011. Mihilli has seen a decrease in business ever since 2007 with the State of Arizona's immigrant issues.[Tim Hacker, Tribune]

SB 1070 a year later

SB 1070 a year later

SB 1070 one year later

Day laborers gather outside a Circle K store in Chandler, Tuesday, April 12, 2011. [Tim Hacker, Tribune]

SB 1070 one year later

Day laborers gather outside a Circle K store in Chandler, Tuesday, April 12, 2011. [Tim Hacker, Tribune]

SB 1070 one year later

Day laborers gather outside a Circle K store in Chandler, Tuesday, April 12, 2011. [Tim Hacker, Tribune]