WASHINGTON (AP) — President Joe Biden used his highly anticipated news conference Thursday to deliver a forceful defense of his foreign and domestic policies, and batted away questions about his ability to serve another four years even as he flubbed a reference to Donald Trump in one of his first answers.

“I’m not in this for my legacy. I’m in this to complete the job I started,” Biden said as he insisted his support among the electorate was strong and he would stay in the race and would win.

Fumbles notwithstanding, the president pushed back at every suggestion that was slowing down or showing noticeable signs of decline, or that he was not in command of the job. But he was facing a growing chorus of calls from lawmakers, celebrities and other prominent Democrats to step aside from the 2024 race.

“My schedule has been full bore,” he declared. “So if I slow down and I cant get the job done, that’s a sign that I shouldn’t be doing it. But there’s no indication of that yet — none.”

Democrats are facing an intractable problem. Top donors, supporters and key lawmakers are doubtful of Biden’s abilities to carry on his reelection bid after his disastrous June 27 debate performance, but the hard-fighting 81-year-old president refuses to give up as he prepares to take on Trump in a rematch.

“I’m determined on running but I think it’s important that I allay fears — let them see me out there,” he said.

The first questioner of Biden’s press conference asked about him losing support among many of his fellow Democrats and unionists, and asked about Vice President Kamala Harris. Biden was at first defiant, saying the “UAW endorsed me, but go ahead,” meaning the United Auto Workers. But then he mixed up Harris and Trump, saying, “I wouldn’t have picked Vice President Trump to be Vice President if she wasn’t qualified.”

Trump weighed in live on Biden’s news conference with a post on his social media network of a video clip of the president saying “Vice President Trump.”