Environmental laws and regulations

FILE - In this Sept. 9, 2016, file photo, Volkswagen engineer James Robert Liang, left, leaves court, in Detroit, after pleading guilty to one count of conspiracy in the company's emissions cheating scandal. U.S. prosecutors are seeking a three-year prison sentence for a Volkswagen engineer who had a key role in the company's diesel emissions scandal. Liang is scheduled to be sentenced Friday, Aug. 25, 2017, in Detroit federal court. He is one of two VW employees to plead guilty, although others charged in the case are in Germany and out of reach. (Virginia Lozano/Detroit News via AP, File)

FILE - In this Sept. 9, 2016, file photo, Volkswagen engineer James Robert Liang, left, leaves court, in Detroit, after pleading guilty to one count of conspiracy in the company's emissions cheating scandal. U.S. prosecutors are seeking a three-year prison sentence for a Volkswagen engineer who had a key role in the company's diesel emissions scandal. Liang is scheduled to be sentenced Friday, Aug. 25, 2017, in Detroit federal court. He is one of two VW employees to plead guilty, although others charged in the case are in Germany and out of reach. (Virginia Lozano/Detroit News via AP, File)

FILE - In this Sept. 9, 2016, file photo, Volkswagen engineer James Robert Liang, left, leaves court, in Detroit, after pleading guilty to one count of conspiracy in the company's emissions cheating scandal. U.S. prosecutors are seeking a three-year prison sentence for a Volkswagen engineer who had a key role in the company's diesel emissions scandal. Liang is scheduled to be sentenced Friday, Aug. 25, 2017, in Detroit federal court. He is one of two VW employees to plead guilty, although others charged in the case are in Germany and out of reach. (Virginia Lozano/Detroit News via AP, File)

FILE - This June 20, 2014 file photo taken by an automatic trail camera provided by the U.S. Fish and Wildlife Service shows an adult female grizzly bear in the Cabinet Mountains in northwest Montana near Canada. A federal judge ruled Monday, Aug. 21, 2017 that the small population of grizzly bears in Montana and Idaho near the Canadian border can be considered endangered even if they are not on the brink of extinction. U.S. District Judge Dana Christensen’s order reversed the 2014 re-classification by U.S. wildlife officials for 40 to 50 bears of the Cabinet-Yaak bear population under the federal Endangered Species Act. (U.S. Fish and Wildlife Service via AP, File)

FILE - In this file photo taken Saturday, Oct. 1, 2016, rhinos graze in the bush on the edge of Kruger National Park in South Africa. Lawyers for a rhino breeder in South Africa say bidding will start Wednesday in an online auction of 264 rhino horns after a court ordered the government to hand over a permit allowing the sale to proceed. Conservation groups believe it will lead to a surge in rhino poaching that has occurred at record levels in the past decade. (AP Photo/Denis Farrell, File)

FILE - In this June 7, 2017 file photo, a coal barge is positioned as a backdrop behind President Donald Trump as he speaks during a rally at the Rivertowne Marina in Cincinnati. President Donald Trump personally promised to activate emergency legal authorities to keep dirty or economically uncompetitive coal plants from shutting down, a top American coal company said. The Trump administration now says it has no plans to do so. (AP Photo/John Minchillo, File)

FILE -- In this Jan. 25, 2017 file photo protesters hold signs as they listen to speakers at a rally outside of City Hall in San Francisco, Calif. California lawmakers return Monday, Aug. 21 , from a monthlong break with a busy agenda that includes tackling the state's housing crisis and deciding whether to make California a statewide sanctuary for people living illegally in the U.S.. (AP Photo/Jeff Chiu,file)