A new memoir details a harrowing struggle with addiction but mostly elides the past corporate and lobbying work that has raised political propriety questions. A federal investigation into Hunter Biden's taxes could still prove a headache for the president, though the younger Biden has denied wrongdoing and says he is cooperating fully with investigators. LISTEN: Hunter Biden's interview with Morning EditionThis episode: congressional correspondent Susan Davis, White House correspondent Scott Detrow, and senior political editor and correspondent Ron Elving.Connect:Subscribe to the NPR Politics Podcast here.Email the show at nprpolitics@npr.orgJoin the NPR Politics Podcast Facebook Group.Listen to our playlist The NPR Politics Daily Workout.Subscribe to the NPR Politics Newsletter.Find and support your local public radio station.