Senator Mark Kelly and Elon Musk are engaged in a public feud that began with a disagreement over space policy and escalated to personal attacks. Musk called Kelly a "traitor" for supporting ...

Democratic Sen. Mark Kelly said Tuesday that billionaire Trump supporter Elon Musk is "not a serious guy" after Musk called Kelly a "traitor" for posting about his visit to war-torn Ukraine and ...

Sen. Mark Kelly of Arizona joins Alicia Menendez in for Nicolle Wallace on Deadline White House to discuss what the fallout should be in the aftermath of the security breach involving a leaked ...

Sen. Mark Kelly (D-Ariz.) on Thursday slammed what he called senior Trump adviser Elon Musk’s loyalties to billionaires after Musk accused the Arizona senator and decorated combat veteran of ...

Sen. Mark Kelly, D-Ariz., fired back at Elon Musk after the billionaire business tycoon labeled the lawmaker a “traitor” in response to a tweet in which Kelly advocated U.S. support for Ukraine.

Sen. Mark Kelly is co-sponsoring a union-friendly bill likely to languish in the Republican-controlled Congress, but it could help recast one of the more stinging criticisms of him when he was in ...

Sen. Mark Kelly (D-Ariz.) slammed Elon Musk for calling him “a traitor” for visiting Ukraine, comparing his track record to ...

WASHINGTON − Elon Musk and Sen. Mark Kelly, D-Ariz., traded jabs on social media Monday, after the billionaire space entrepreneur called the former NASA astronaut a "traitor" for his recent trip ...

Sen. Mark Kelly (D-Ariz.) spent the weekend in Ukraine gathering harrowing information on the impact of President Trump's ...