Mealey's (November 19, 2018, 3:37 PM EST) -- WASHINGTON, D.C. — Environmental groups and several Native American tribes on Nov. 15 filed briefs in District of Columbia federal court, arguing that they have standing to oppose the Trump administration’s decision to reduce the size of two national monuments, and they argue that the president lacks the authority in the first place (Grand Staircase Escalante Partners, et al. v. Donald J. Trump, et al., No. 17-2591, D. D.C., The Wilderness Society, et al. v. Donald J. Trump, et al., No. 17-2587, D. D.C. [consolidated])....