Mealey's (September 10, 2020, 12:27 PM EDT) -- CHEYENNE, Wyo. — The states of Wyoming and Montana on Sept. 4 filed a joint reply brief in Wyoming federal court contending that the 2016 the Methane Waste Prevention Rule, which requires oil and gas producers to use currently available technologies and processes to cut flaring in half at oil wells on public and tribal lands in an effort to reduce methane pollution, is "unlawful" and should be vacated (Wyoming, et al. v. United States Department of the Interior, et al., No. 16-285, D. Wyo.)....