Hunter Biden’s struggles with addiction after the death of his brother Beau Biden have been the focus of hours of testimony during his trial for federal criminal charges, putting some of the Biden family’s most personal problems on full display. The president’s son has pleaded not guilty to three felony counts connected to a gun he purchased in October 2018. For decades, the president has navigated the sometimes-competing demands of his political career and being a father, particularly when it comes to Hunter Biden. The most emotional parts of the trial involved the testimony from those closest to Hunter Biden, including his daughter Naomi, his ex-girlfriend and his brother’s widow Hallie Biden and his ex-wife, Kathleen Buhle. “I am the President, but I am also a Dad,” Biden said in a statement at the start of the trial.