David Keeling's past at UPS, where he was a key player in resisting demands for air-conditioning in delivery vans despite drivers suffering from heat-related illnesses, surfaces as a potential conflict as he steps up for a pivotal role in public health oversight. As the Senate committee prepares for a confirmation vote, labor unions remain divided on whether Keeling would adequately advocate for essential heat safety protections, a pressing issue as climate conditions continue to escalate.