Justice Antonin Scalia wrote in the opinion of the majority ruling that a 1993 federal voter law "precludes Arizona from requiring a federal form applicant to submit information beyond that required by the form itself."

The remains of almost 800 people, or 34 percent of the total examined by the Pima County Office o the Medical Examiner since 1990, haven’t been identified.

Mystery surrounds the Arizona desert as five unidentified bodies were found by authorities. Medical personnel is trying to sort the case out, and so far the remains have been cataloged as murder victims from Mexico or Central America.

Two small planes collided in midair over central Arizona, killing all four occupants according to authorities.

A pair of twins in Arizona suffer stroke just months apart from one another.

Mom mexican prison incident has Yanira Maldonado in jail.

The Maricopa County, Arizona office of sheriff Joe Arpaio was found by a federal judge to have made use of racial profiling and illegal detention in his immigration patrols. His attorney says an appeal will be made within 30 days.

Jodi Arias declared during Tuesday's testimony that she now prefers life in prison over the death penalty.

A new online mapping tool lets the user track and find information on deaths along the border. The Border Patrol says 463 migrants died while crossing the southwestern part of the border in 2012, the highest total since 2005.

Some states have introduced legislation making gold legal tender in the wake of a faltering dollar.

Congressman Jason Chaffetz was surprised to find this feature on the U.S.-Mexico border.

On Friday, a court ruled that an Arizona law prohibiting controversial Mexican-American Studies curriculum in Tucson is constitutional.

Alleged murderer Jodi Arias answered to jury questions on the night Travis Alexander died: "I cannot remember."

Photos of the first documented public accident involving the 2014 Stingray has surfaced. Is the driver during the accident GM test driver Jim Mero?

Apparently, birds of a feather have no qualms about running up the score on one another.

An 11-year-old girl with leukemia who was spirited out of a Phoenix hospital by her mother - prompting a police search - is safe and being treated in Mexico, her father told NBC News on Wednesday.

A federal judge blocked Arizona on Friday from applying a new law that bars Planned Parenthood clinics from receiving money through the state to provide medical care because the women's health organization also performs abortions.

The Supreme Court agreed on Monday to consider whether Arizona may demand that voters show proof of U.S. citizenship to register to vote in federal elections.

Arizona Republican Governor Jan Brewer, in yet another clash with the White House, issued an order on Wednesday barring illegal immigrants who qualify for temporary legal status in the United States from receiving any state or local public benefits.