A veteran state lawmaker thinks he's found a way to finally end the debate over whether humans are better or worse than machines at counting ballots. Put them both to the test.

Fifteen Native American tribes will get a total of $580 million in federal money this year for water rights settlements, the Biden administration announced Thursday.

Attorneys for five Arizona gun dealers are asking a federal judge to toss out a claim by the Mexican government that they are responsible for violence in that country. In a new court filing, the team of lawyers says nothing in the complaint alleges any evidence that the weapons sold by the five companies -- three in Tucson, one in Yuma and one in Phoenix -- actually were used by Mexican cartels in commission of a crime.

Arizona officials refer to a notoriously congested stretch of desert highway through tribal land as the Wild Horse Pass Corridor, a label that's less about horses than the bustling casino by the same name located just north of where the interstate constricts to four lanes.

Republicans in the state Senate are working to greatly boost the penalties for people who supply the powerful synthetic opioid fentanyl, advancing a bill on Thursday that would subject someone who makes, transports or sells the drug to life in prison or the death penalty if someone dies after taking the drug.

A record number of Arizonans signed up for health insurance this year under the Affordable Care Act, as enrollment in the program continues to rebound from the Trump administration’s efforts to suppress coverage.

Kyrsten Sinema -- Arizona's Democrat-turned-independent U.S. senator -- and U.S. Sen. Thom Tillis of North Carolina recently negotiated an immigration package that, in theory, could solve the worst border crisis in American history. Unfortunately, in practice, the package would do little to staunch the record influx of illegal immigrants. If anything, it could make the problem even worse. 

Four members of the Oath Keepers, including one Arizona man, were convicted Monday of seditious conspiracy in the Jan. 6, 2021, U.S. Capitol attack in the second major trial of far-right extremists accused of plotting to forcibly keep President Donald Trump in power.

A surge in Cuban and Nicaraguan arrivals at the U.S. border with Mexico in December led to the highest number of illegal border crossings recorded during any month of Joe Biden's presidency, authorities said Friday.

Vice President Kamala Harris and two cabinet secretaries on Thursday celebrated the start of construction of a new high-capacity power transmission line between Arizona and California, which they hope will lead to future solar energy farms in the desert outside Phoenix.