Mealey's (April 15, 2020, 2:01 PM EDT) -- WASHINGTON, D.C. — A Native American advocacy group on April 10 filed a brief in District of Columbia federal court contending that it should grant summary judgment on the issue of whether the group has standing to assert claims that President Donald J. Trump violated the Antiquities Act when he reduced the size of two national monuments (Hopi Tribe, et al. v. Donald J. Trump, et al., No. 17-2590; Utah Diné Bikéyah, et al. v. Donald J. Trump, et al., No. 17-2605, Natural Resources Defense Council, et al. v. Donald J. Trump, et al., No. 17-2606, D. D.C. [consolidated])....