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Victoria Lopez, policy and advocacy director for the ACLU of Arizona, said a federal lawsuit challenging SB 1070_s “show your papers” provision is a way to show that the provision has caused harm to at least one person. )Cronkite News Photo by Katrina Arroyos)

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ACLU lawsuit challenges SB 1070's 'show your papers' provision

The American Civil Liberties Union filed a lawsuit Thursday challenging the constitutionality of SB 1070_s requirement that law officers to determine whether someone is in the country illegally if they have reason to suspect it.