Enter Mark Kelly. The astronaut-turned-senator is reportedly ... Kelly hails from an important swing state — Arizona in his ...

After Vice President Kamala Harris became the presumptive Democratic presidential nominee in July, Arizona Sen. Mark Kelly was listed by betting websites as the leading contender to join Harris ...

Arizona U.S. Sen. Mark Kelly did a solid job exposing the grotesque disqualifying behavior and slippery, evasive answers of Pete Hegseth, Donald Trump’s pick to run the Department of Defense.

NPR speaks with Democratic U.S. Sen. Mark Kelly of Arizona, a member of the Senate Intelligence Committee, about the confirmation hearing for Tulsi Gabbard, Trump's pick to lead national intelligence.

Senator Mark Kelly opposes Pete Hegseth's nomination for Secretary of Defense, citing concerns about his readiness.

Democratic Sen. Mark Kelly of Arizona is urging Republicans to work in a bipartisan fashion to find border security and ...

Senator Mark Kelly leads 12 colleagues in urging bipartisan efforts on U.S. border security and immigration reform, ...

Arizona Democratic Sen. Mark Kelly thinks the highly publicized immigration raids days into the second Trump administration are all “for show,” and instead said a bipartisan group in Congress needs to ...

Sen. Mark Kelly of Arizona accused Pete Hegseth of lacking transparency during a confirmation hearing for President-elect Donald Trump’s defense secretary pick on Tuesday. During the hearing in ...

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Sen. Mark Kelly aptly exposes Pete Hegseth's fatal flaw as Defense secretary. It's the same one found in Kelly's Republican ...