Sen. Mark Kelly of Arizona called Russian President Vladimir Putin "a war criminal" who deserves to be "sitting in a prison ...

The following is the transcript of an interview with Democratic Sen. Mark Kelly of Arizona that aired on "Face the Nation ...

Kelly laments the death of astronaut Jim Lovell and a U.S. disinvestment from science while sidestepping White House talk.

Federal funding cuts will have far-reaching impact on public health and safety services around the state, Sen. Mark Kelly and Mayor Kate Gallego say.

Sen. Mark Kelly tells "Face the Nation with Margaret Brennan" that he believes former President Joe Biden's handling of the ...

Senator Mark Kelly visits constituents detained at Eloy Detention Center, advocates for immigration system reform.

Mark and Scott Kelly, twin brothers and former NASA astronauts, spoke to "CBS Mornings" about how the agency is set to lose ...

The still-dangerous Arizona wildfire will require rebuilding and rethinking access to the North Rim to include winter, Kelly ...

NASA makes us proud to be Americans. And even more so, the agency is an engine of discovery and innovation that benefits all ...

Sen. Mark Kelly was joined by former Social Security Commissioner Martin O’Malley. They both said President Trump’s policies will negatively affect people on Medicaid, Medicare, and Social Security.

Sinema, who campaigned for Kelly in 2020 and has worked with him in the Senate to pass trillions of dollars in COVID-19 relief funding and the $1.2 trillion physical infrastructure package last ...