The Democratic establishment has never looked more vulnerable to progressive upheaval; Biden’s supposed leadership bridge to a new generation leads nowhere. “Moderate” darling transportation secretary Pete Buttigieg has seen his slim national prospects dwindle with every near-miss in the air and toxic train derailment on the ground. Vice President Kamala Harris has been about as visible as Biden was on the 2020 campaign trail — and a geriatric Capitol Hill leadership class appears on its last legs.