It isn't a question of loopholes, this is a deliberate policy decision. These articles [1, 2] discuss the politics more. > In the final hours of Scott Pruitt’

It isn't a question of loopholes, this is a deliberate policy decision. These articles [1, 2] discuss the politics more. > In the final hours of Scott Pruitt’s tenure as administrator, the Environmental Protection Agency moved on Friday to effectively grant a loophole that will allow a major increase in the manufacturing of a diesel freight truck that produces as much as 55 times the air pollution as trucks that have modern emissions controls. > The move by the E.P.A. came after intense lobbying by a small set of manufacturers that sell glider trucks, which use old engines built before new technologies significantly reduced emissions of particulates and nitrogen oxide that are blamed for asthma, lung cancer and other ailments. … > But agency officials confirmed to The New York Times that, through the end of 2019, the E.P.A. will not enforce an annual cap of 300 gliders per manufacturer that had been imposed in January. … > An estimated 10,000 glider trucks were sold nationally in 2015 — about 4 percent of new heavy-duty truck sales — and production could soon return to that level. … The agency, she said, is also considering formally delaying the 300-unit cap until December 2019 — by which point it hopes to have permanently repealed the cap. [1] "‘Super Polluting’ Trucks Receive Loophole on Pruitt’s Last Day" (July 6, 2018) https://www.nytimes.com/2018/07/06/us/glider-trucks-loophole-pruitt.html https://www.nytimes.com/2018/07/06/us/glider-trucks-loophole... [2] "How $225,000 Can Help Secure a Pollution Loophole at Trump’s E.P.A." (Feb. 15, 2018) https://www.nytimes.com/2018/02/15/us/politics/epa-pollution-loophole-glider-trucks.html https://www.nytimes.com/2018/02/15/us/politics/epa-pollution...