Environmental laws and regulations

Democratic presidential candidate Sen. Elizabeth Warren, D-Mass., speaks at a campaign event, Monday, Sept. 2, 2019, in Hampton Falls, N.H. (AP Photo/Elise Amendola)

Volunteers walk past an area scorched by fires in the Chiquitania forest on the outskirts of Robore, Bolivia, Thursday, Aug. 29, 2019. While some of the fires are burning in Bolivia's share of the Amazon, the largest blazes were in the Chiquitania region of southeastern Bolivia. It's zone of dry forest, farmland and open prairies that has seen an expansion of farming and ranching in recent years. (AP Photo/Juan Karita)

File - In this May 4, 2010, file photo, a sea lion tosses a partially eaten salmon in the Columbia River near Bonneville Dam, where six more sea lions were trapped earlier in the day with one to be euthanized, in North Bonneville, Wash. More than 1,100 sea lions could be killed annually in a nearly 300-mile stretch of the Columbia River on the Oregon-Washington border to boost faltering populations of salmon and steelhead. The National Marine Fisheries Service said Friday, Aug. 30, 2019, it's taking public comments on the plan requested by Idaho, Oregon, Washington and tribes in those states. (AP Photo/Don Ryan, File)

FILE - This Thursday, Feb. 14, 2019, file photo, shows the Volkswagen logo on an automobile at the 2019 Pittsburgh International Auto Show in Pittsburgh. The U.S. Environmental Protection Agency is making Volkswagen Group correct fuel economy labels for about 98,000 gasoline-powered vehicles from the 2013 through 2017 model years. (AP Photo/Gene J. Puskar, File)

FILE - In this April 24, 2015, file photo, pumpjacks work in a field near Lovington, N.M. Oil industry and environmental groups say they expect the Environmental Protection Agency to release a proposed rule over the next few days that will roll back requirements on detecting and plugging methane leaks at oil and gas facilities (AP Photo/Charlie Riedel, File)

A fire burns trees and brush along the road to Jacunda National Forest, near the city of Porto Velho in the Vila Nova Samuel region which is part of Brazil's Amazon, Monday, Aug. 26, 2019. The Group of Seven nations on Monday pledged tens of millions of dollars to help Amazon countries fight raging wildfires, even as Brazilian President Jair Bolsonaro accused rich countries of treating the region like a "colony." (AP Photo/Eraldo Peres)

Democratic presidential candidate Sen. Bernie Sanders greets striking telecommunications workers on Sunday, Aug. 25, 2019, during a stop in Louisville, Ky. Sanders spoke to the striking workers before attending a rally to promote Democratic initiatives being bottled up in the Republican-led Senate. (AP Photo/Bruce Schreiner)

FILE - This July 9, 2017 file photo, shows a view of Grand Staircase-Escalante National Monument in Utah. The U.S. government's final management plan for lands in and around the Utah national monument that President Donald Trump downsized is light on new protections for the cliffs, canyons, waterfalls and arches found there, but it does include a few more safeguards than were in a proposal last year. A summary the Bureau of Land Management provided to The Associated Press shows that the plan for the Grand Staircase-Escalante National Monument in southwestern Utah codifies that the lands cut out of the monument will be open to mineral extraction such as oil, gas and coal as expected. (Spenser Heaps/The Deseret News via AP, File)

FILE - In this May 13, 2019 file photo provided by the National Park Service is a female condor in Zion National Park, Utah. Seven environmental and animal protection groups have filed the first lawsuit challenging the Trump administration's recent rollbacks to the Endangered Species Act. Their lawsuit filed Wednesday, Aug. 21, 2019, in federal court in San Francisco comes after the federal government announced last week it was rescinding some protections for wildlife. (National Park Service via AP, File)

FILE – In this June 26, 2018 file photo, a Nissan Leaf charges at a recharge station while parked by the Denver City County Building in downtown Denver. The Colorado Air Quality Control Commission approved a new regulation on Friday, Aug. 16, 2019, requiring that at least 5% of the vehicles sold in the state by 2023 emit zero pollution. The rule approved Friday by the state Air Quality Control Commission applies to auto manufactures, not buyers. It's intended to boost the number of electric vehicles in a state struggling to control air pollution in heavily populated areas. (AP Photo/David Zalubowski, File)