(Bloomberg) -- The Trump administration is launching a sweeping overhaul of US environmental mandates in a campaign it billed as the “biggest deregulatory action” of its kind in US history.Most Read from BloombergTrump DEI Purge Hits Affordable Housing GroupsNYC Congestion Pricing Toll Gains Support Among City ResidentsElectric Construction Equipment Promises a Quiet RevolutionOpen Philanthropy Launches $120 Million Fund To Support YIMBY ReformsProspect Medical’s Pennsylvania Hospitals at Risk o