Joe Biden insisted he was the person to reunite America in a second term in the White House and was “up for the job” as he hit the trail in Pennsylvania on Sunday – but the number of high-profile Democrats doubting his position as the presumptive party nominee only grew amid a campaign in crisis. Pressure on the US president increased even further following his poor debate performance against Donald Trump last month and an underwhelming ABC interview last week, as a group of Democratic representatives met online with House minority leader Hakeem Jeffries on Sunday. Congressmen Jerry Nadler of New York and Jamie Raskin of Maryland were reportedly among a clutch of lawmakers who told Jeffries that Biden should leave the presidential race. Congress will be back on Monday from its latest recess and the focus among Democrats is whether Biden can continue to campaign for re-election. House Democrats are expected to meet in person with Jeffries on Tuesday to discuss the president. Biden’s fresh blitz on Sunday to rally voters, donors and campaign staff also came as prominent House Democrat Adam Schiff said Vice-President Kamala Harris could beat Trump and the president should “pass the torch” to someone else if he can’t win “overwhelmingly”. The US president made no mention of his health and fitness when he told a loudly supportive Philadelphia church congregation in the morning: “We must unite America again … that’s my goal. That’s what we’re going to do.” But Schiff, who is likely to become California’s next senator in the November election, said he thought Harris could decisively win the election against presumptive Republican party nominee Trump, if Biden drops out. He warned that the US president either “has to win overwhelmingly, or he has to pass the torch to someone who can”. Meanwhile, reports began emerging after the virtual meeting with Jeffries on Sunday, via CBS and CNN, that as well as Nadler and Raskin, representatives Mark Takano of California, Adam Smith of Washington state, Jim Himes of Connecticut, Joe Morelle of New York and Susan Wild of Pennsylvania told him they wanted Biden to quit as the race, the outlets said, citing unnamed sources. Many want Harris to take over as the nominee. Democrats Maxine Waters and Bobby Scott told Jeffries they support Biden to become the nominee and fight for re-election, while Jeffries did not reveal his hand, CNN reported. As the chaos continued, Biden was on a three-stop swing in Pennsylvania, first addressing the church service in a majority Black neighborhood in north-western Philadelphia before expecting to head to the state capital of Harrisburg about 100 miles away in the afternoon. He was introduced at the Mount Airy church of God in Christ in Philadelphia as “our honored guest” and senior pastor Louis Felton told the congregation that if they stand together “there is no election that we cannot win”, adding, “We love our president. We pray for our president.” One demonstrator outside the church underlined the conflicting views within the party and even normally loyal Democratic voters, carrying a sign that read: “Thank you Joe, but time to go.” people stand around man wearing blue shirt and holding a red, white and blue sign reading ‘Thank U Joe But Time To Go.’ View image in fullscreen A protester holds a sign ahead of Joe Biden’s visit to Mt Airy church of God in Christ in Philadelphia, on 7 July 2024. Photograph: Matt Rourke/AP But Felton said: “God knew Biden needs some love.” He described Biden as a president of vision and integrity and said: “President Biden is coming back. He’s a comeback kid. He’s a fighter. He’s a champion.” He concluded: “Never count Joseph out,” as congregants chanted “four more years” when Biden finished speaking. In Harrisburg, Biden joked that “Dark Brandon is coming back,” to a supporter who asked about the nickname, the Hill reported, which was originally a mistaken interpretation of a Republican insult that then was reclaimed by Biden’s election campaign as a humorous show-of-strength meme. Then as Biden was later departing for the White House, he responded to a reporter asking: “Will you have to convince Nato you’re up for the job again?” ahead of the gathering of defense alliance leaders in Washington DC this week. skip past newsletter promotion Sign up to The Stakes — US Election Edition Free newsletter The Guardian guides you through the chaos of a hugely consequential presidential election Enter your email address Sign up Privacy Notice: Newsletters may contain info about charities, online ads, and content funded by outside parties. For more information see our Privacy Policy. We use Google reCaptcha to protect our website and the Google Privacy Policy and Terms of Service apply. after newsletter promotion Biden gave a thumbs up and said “I’m up for the job,” having earlier shouted “yes” with a big smile when asked if his party was behind him. Meanwhile Mark Warner, another prominent Democrat and US senator for Virginia, reportedly is wrangling Senate Democrats to ask Biden at the White House on Monday to step down as the presumptive nominee. On Sunday morning, Schiff told NBC News’s Meet the Press show: “The [ABC] interview didn’t put concerns to rest. No single interview is going to do that. And what I do think the president needs to decide is, can he put those concerns aside? Can he demonstrate the American people that what happened on the debate stage was an aberration?” Schiff then weighted Harris’s prospects if she became the party nominee not Biden, as her profile rises fast. “I think she very well could win overwhelmingly, but before we get into a decision about who else it should be, the president needs to make a decision about whether it’s him.” Bernie Sanders, the independent US senator from Vermont who caucuses with Democrats, signaled continued support for Biden. He told CBS: “What we are talking about now is not a Grammy award contest for best singer. Biden is old. He’s not as articulate as he once was. I wish he could jump up the steps on Air Force One – he can’t,” Sanders admitted, while adding a challenge to the president to continue to run on policies that help working-class voters. “Whose policies will benefit the vast majority of the people in this country, who has the guts to take on corporate America?” Sanders asked, saying the Democratic nominee needed to fight for health insurance coverage, selectively higher taxes and benefits. “Those are the issues he’s talked about. He’s got to bring them up in the fallt,” Sanders said. Democratic US senator Chris Murphy of Connecticut said “the clock is ticking” for the president to quell doubts and that this was a crucial week for him.