Kyrsten Sinema

Arizona’s U.S. senators are urging federal officials to classify copper as a critical mineral amid growing demand. They say it’s necessary for national security and water and clean energy infrastructure.

Democratic U.S. Rep. Ruben Gallego says he’ll challenge independent U.S. Sen. Kyrsten Sinema of Arizona in 2024. Monday's announcement makes Gallego the first candidate to jump into the race in the battleground state.

Officials from Arizona have called on a politically diverse delegation of senators to craft immigration reform amid an increase in migrant arrivals that can overwhelm local resources.

Arizona Sen. Kyrsten Sinema is becoming an Independent and leaving the Democratic Party. It won’t change the balance of power in the Senate, but it could affect her own political fortunes.

Democratic Sen. Kyrsten Sinema of Arizona says she has switched her registration to independent.

The Senate Indian Affairs Committee approved bills granting water rights to the Hualapai, letting the Colorado River Indian Tribes lease their water and adding funding and extending the deadline for review of a water system for the White Mountain Apache.

A bill has been introduced in the U.S. Senate to increase funding for the National Park Foundation. The nonprofit was chartered by Congress in 1967 and is the official partner of the Park Service, generating private support to preserve the nation’s 63 parks.

Sen. Kyrsten Sinema says Americans prefer politicians who work across the aisle. The Arizona Democrat gave a forceful defense of her brand of bipartisanship Monday in a speech in Kentucky.

The federal government will allocate more than $32 million from last year’s Infrastructure Investment and Jobs Act to drinking water projects in Arizona.

Arizona Democratic Sen. Kyrsten Sinema stood by her decision to kill a tax hike on investors during an event in Flagstaff earlier this week, saying she did what's best for Arizona.