Sen. Mark Kelly says Elon Musk is "not a serious guy"
Elon Musk called Sen. Mark Kelly a "traitor" after the Arizona Democrat posted on X about his recent trip to Ukraine.
Rocket builder vs NASA astronaut: Musk, Sen. Kelly have social media skirmish over Ukraine
The Trump ally and billionaire took a swing at Sen. Mark Kelly, as tensions between Washington and Ukraine have escalated in ...