CEI's Marlo Lewis and representatives of 28 other free market and conservative organizations filed this joint comment urging EPA not to make an endangerment finding with respect to greenhouse gas (GHG) emissions from new motor vehicles under Section 202 of the Clean Air Act. The comment argues that an endangerment finding could trigger an economically devastating regulatory cascade that Congress never approved or intended when it enacted Section 202 in 1970 or amended it in 1977.