Facebook Twitter Email Print Carper, Udall Ask EPA OIG To Broaden Investigation Into Legally Questionable Loophole For High-Polluting Glider Trucks Oct 31 2018 Permalink: https://www.carper.senate.gov/public/index.cfm/2018/10/carper-udall-ask-epa-oig-to-broaden-investigation-into-legally-questionable-loophole-for-high-polluting-glider-trucks