At least two lawsuits have already been filed in federal courts in Arizona to challenge the state's new law cracking down on illegal immigration, but three national organizations say they plan one of their own.

PHOENIX - Immigrant rights groups filed a lawsuit in federal court in Phoenix Tuesday challenging the town of Cave Creek's new day labor law.

Civil rights advocates sued Arizona in federal court Tuesday, claiming the state’s Legal Arizona Worker Act violates the U.S. Constitution and threatens the success of Arizona businesses.

January 5, 2005

A federal appeals court won’t block Arizona from enforcing provisions of Proposition 200.

A federal judge late Wednesday upheld a 4-year-old state law which requires people to provide proof of citizenship to register to vote and produce certain types of identification before they can cast a ballot.

A group of Hispanic activists filed a lawsuit in federal court Tuesday seeking to abolish specific identification requirements needed to vote in Arizona, saying the measures are unfair and discriminatory.

Arizona laws that require would-be voters to produce documents proving they are U.S. citizens don’t amount to an unconstitutional poll tax, a federal judge has ruled.

Arizona will ask the nation’s highest court to require voters to produce identification for next month’s general election.

A federal judge will hear arguments July 22 on whether to allow Arizona's tough new law aimed at illegal immigrants take effect.

WASHINGTON – When the U.S. Supreme Court hears an Alabama challenge to a federal voting-rights law Wednesday, Arizona officials and civil rights activists will be keeping a close eye on the case.

Gov. Jan Brewer is threatening to have Attorney General Terry Goddard blocked from interfering in what could be the most broad-based challenge to the state's new immigration law.

Attorney General Tom Horne will argue to the nation's high court on March 18 that Arizona should be allowed to enforce a 2004 voter-approved law requiring people to provide proof of citizenship to register to vote.

WASHINGTON – Arizona Gov. Jan Brewer and the Mexican American Legal Defense and Education Fund are on opposite sides of the state’s SB 1070 immigration law, but both claimed victory in Monday’s Supreme Court decision on the law.

November 19, 2004

December 9, 2004

A federal judge has given the OK for Gov. Janet Napolitano to officially proclaim approval of Proposition 200.

A Latino civil rights group is asking federal appellate judges to overturn a lower court ruling upholding Arizona's voter ID requirements.

Civil rights groups are making a last-ditch effort to keep a key provision of the state’s 2010 immigration law from being enforced as early as this coming week.

Civil rights advocates sued the state of Arizona in federal court Tuesday, claiming the state's Legal Arizona Worker Act violates the U.S. Constitution and threatens the success of Arizona businesses.

The American Civil Liberties Union and the Mexican American Legal Defense and Educational Fund are challenging the Arizona law that denies bail to illegal immigrants accused of serious crimes.

A second lawsuit is challenging the constitutionality of a voter-approved measure that requires people to prove citizenship before registering to vote.