Democratic 2020 presidential candidate Beto O’Rourke is not interested in talking about former Vice President Joe Biden’s age, health or fitness for office In fact, he says it’s the “last thing” he cares about.  Speaking on “Meet the Press” on Sunday, the former Texas member of Congress said there were far bigger issues at hand ― including health care, immigration and climate change ― than the inner-party fight about Biden’s age and ability  “No, I could care less about that to be honest with you,” O’Rourke said in response to a question about the ongoing debate surrounding Biden’s fitness “I was listening to your opening package, and I mean, who the hell cares, right?”  Following the third Democratic debate last week, Sen Cory Booker (D-N.J.) lobbed a fierce attack against 76-year-old Biden, questioning his ability to run for office  Former Housing Secretary Julián Castro also took aim at Biden on the debate stage, making a dig at his memory skills and asking if he’d already forgotten something he’d said “just two minutes ago ”   Biden has made a series of gaffes on the campaign trail, prompting the debate among some Democratic candidates about his fitness Despite the missteps, he has remained the front-runner in polls and has pledged to release his medical records before the first primary votes  Sen. Bernie Sanders (I-Vt.), who is older than Biden at 78, followed his lead and made the same pledge  O’Rourke said he did not share the other candidates’ concerns, and would much rather focus on the “big things” that people in America care about  Watch the interview below: Download REAL LIFE. REAL NEWS. REAL VOICES. Help us tell more of the stories that matter from voices that too often remain unheard Join HuffPost Plus