Republican-wrought chaos was indeed Mr. Biden’s main focus. According to Democratic donors, the strategy is a moneymaker: Mr. Biden’s campaign reported having about $46 million in cash on hand at the end of December, compared with $33 million for Mr. Trump’s campaign, according to filings on Wednesday to the Federal Election Commission.
At multiple points during his visit to New York, the president excoriated Mr. Trump for pressuring Republicans to abandon a deal on the border. He chastised Republicans for turning away from supporting Ukraine in its efforts to beat back a Russian invasion: “What are we doing? Stepping back?”
He turned to an often-repeated story on his decision to enter the 2020 presidential race, which came after Mr. Trump refused to condemn a group of white supremacists who held a rally that turned deadly in Charlottesville, Va. And he twice criticized Mr. Trump’s remarks after a school shooting in Iowa in January in which the former president told a crowd that it should “get over” the shooting.
“Just get over it?” Mr. Biden said, raising his voice to a yell. “What the hell is he doing?”
Earlier in the day, protests over Gaza were not detectable from the wood-paneled drawing room of Larry Linden, a philanthropist and climate activist who was the managing director of Goldman Sachs. Standing next to the president, Mr. Linden told a crowd of supporters gathered at his home on the Upper West Side that Mr. Biden “seems to excel at practically everything,” including pulling the United States out of the coronavirus pandemic, all “while maintaining your integrity, decency, faith and likability.”