The hearing focused on the business practices of his son's efforts and insinuations that, while serving as vice president, Biden used his office to enrich himself or his family. So far, the Republicans have no substantive evidence to support that claim. This episode: political correspondent Sarah McCammon, White House correspondent Tamara Keith, and political correspondent Susan Davis.The podcast is was produced by Casey Morell and Elena Moore. Our editor is Eric McDaniel. Our executive producer is Muthoni Muturi.Unlock access to this and other bonus content by supporting The NPR Politics Podcast+. Sign up via Apple Podcasts or at plus.npr.org. Connect:Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.