id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cjel-3476	Richardson, Nathan	Aviation, Carbon, and the Clean Air Act	2019	43	.pdf	application/pdf	18903	1089	56	Scholars have argued both sides of this issue in the context of the E.U. ETS policy.219 In any case, imposing EPA aviation emissions standards on foreign- flag aircraft would be internationally controversial, and might be challenged in court—as noted, many countries beside the U.S. have strongly opposed the E.U.’s similar move.220 No matter what the Agency does to regulate aviation emissions, some litigation by industry groups is 218. As long as a participating nation of ICAO adopts aircraft emission standards that are equal to or more stringent than ICAO’s standards, the certificates of airworthiness for such nations are valid.	cache/cjel-3476.pdf	txt/cjel-3476.txt