"It's not 'America First' to pull the rug out from under an ally and leave their people to die," Sen. Mark Kelly said after ...

Senator Mark Kelly, an Arizona Democrat and former astronaut, visited Ukraine over the weekend and said the United States ...

Senator Mark Kelly opposes a funding bill supported by Trump and Musk, citing potential harm to public services.

Union support still matters in Democratic politics and Kelly has moved to erase organized labor's doubts about him.

Sens. Ruben Gallego and Mark Kelly of Arizona stuck with their party to oppose an 11th-hour GOP plan to fund the federal government until October.

Kelly blamed the Trump administration for making veterans' health care more difficult by indiscriminately dumping staffers.

Kelly, a former Navy combat pilot, responded to the tech billionaire’s remark by saying “he’s not a serious guy” and should “go back to building rockets.” ...

Elon Musk and Sen. Mark Kelly sparred on social media Monday, with the tech billionaire calling the Arizona Democrat a “traitor” over a series of posts in support of Ukraine and its people.

Mark Kelly and billionaire Elon Musk traded insults ... During his address to Congress last week, Trump announced Zelenskyy had reached out to him again seeking peace, and said Putin has sent ...