Filling cabinet position with temporary, acting chiefs has long been a trademark of the Trump administration. But on Friday, a judge ruled that William Perry Pendley’s time as acting chief of the Bureau of Land Management was unlawful, and ordered a massive review of the agency’s moves over the past year, opening the door for walk backs. POLITICO’s Ben Lefebvre and Kelsey Tamborrino investigate which of BLM’s rules could be at risk. Ben Lefebvre covers energy policy for POLITICO.  Kelsey Tamborrino is an energy reporter for POLITICO. Anthony Adragna is an energy reporter and host of POLITICO Energy. Carlos Prieto is a POLITICO podcast producer. Irene Noguchi is the executive producer of POLITICO’s audio department. Jenny Ament is the senior producer of POLITICO’s audio department.