Arizona Sen. Mark Kelly has introduced a new bill that he says will address the nationwide shortage of school bus drivers.

The endorsements are a big score for Grijalva, the daughter of the late congressman who she is now hoping to succeed in the ...

Mark Kelly and Elon Musk, seemingly President Donald Trump’s ... Musk stood by an earlier social media post in which he ...

Senator Mark Kelly (D-AZ) hit back at Elon Musk after the billionaire Trump ally doubled down on calling the former astronaut ...

Sen. Mark Kelly added his voice to the chorus of Democratic complaints on Capitol Hill to Defense Secretary Pete Hegseth ...

The group chat on a public messaging service about a strike in Yemen adds to the Democrats' view that Defense Secretary Pete ...

"I am running for Congress because Southern Arizona deserves bold leadership that will fight for working families and stand ...

U.S. Sen. Mark Kelly called for Defense Secretary Pete Hegseth to resign for sending text messages detailing military plans ...

Both of Arizona’s U.S. senators have now called on Defense Secretary Pete Hegseth to resign after he provided details of a ...

Democratic Arizona Sens. Mark Kelly and Ruben Gallego hosted a town hall in Phoenix on March 17 to discuss the potential impacts of cuts to Medicaid led by congressional Republicans.

Musk defended his decision to brand the Arizona senator and former astronaut as a traitor over his support for Ukraine.