Senator Mark Kelly opposed Peter Hegseth's nomination as Defense Secretary, citing his lack of qualifications and past issues.

Arizona Senator Mark Kelly says as the Senate considered the nomination of Pete Hegseth to serve as Defense Secretary in the second Trump administration post cloture that Hegseth does not check any of the boxes for Defense Secretary,

Arizona Senator Mark Kelly says as the Senate considered the nomination of Pete Hegseth to serve as Defense Secretary in the second Trump administration post cloture that the Senate was potentially confirming the most unprepared nominee to lead the Department of Defense that has ever been put forward,

Senator Mark Kelly leads 12 colleagues in urging bipartisan efforts on U.S. border security and immigration reform, addressing a letter to Republican Senate Majority Leader Thune.

Arizona Democrats were ready to fight Donald Trump on immigration. Now they find their own senators siding with Republicans.

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

The measure's bipartisan approval reflects broad support for cracking down on crime perpetrated by illegal immigrants.

Kelly and Gallego joined eight other Senate Democrats to help the Republican-led immigrant crime bill thwart a filibuster.

The Arizona senator questioned Department of Defense nominee Pete Hegseth about his history of getting blitzed off his ass.

Pete Hegseth’s controversial nomination as defense secretary moved a step closer to confirmation with the Senate Armed Services Committee recommending him to the job on party lines. U.S. Sen. Mark Kelly, D-Ariz., voted Monday against Hegseth, citing a lack of managerial experience and “concerning personal issues.”

Sen. Mark Kelly reiterated on Sunday his continuing concern about the judgment of Tulsi Gabbard, President-elect Donald Trump’s pick for director of national intelligence, saying she had a “predilection for misinformation.”

Senator Mark Kelly (D-Ariz.) spoke with Margaret Brennan on Face the Nation on Sunday about the national security law banning TikTok, the Laken Riley Act, and two of President-Elect Trump's Cabinet picks.