Pollution laws and regulations

FILE - In this Jan. 11, 2017, file photo, eEarly morning traffic is at a standstill on Interstate 5 headed into town as a semi truck and cars block the off ramp to Highway 217 above in Portland, Ore. A federal watchdog says the Trump administration moved to exempt a type of super-polluting cargo truck from clean air rules without conducting a federally mandated study on how it would impact public health. The report by the Environmental Protection Agency's inspector-general says agency officials cited a “wild West” atmosphere and “fast and loose” rulemaking at the agency under then-Administrator Scott Pruitt. (AP Photo/Don Ryan, File)

House Speaker Nancy Pelosi of Calif. speaks during a press conference at the COP25 climate talks summit in Madrid, Monday Dec. 2, 2019. The chair of a two-week climate summit attended by nearly 200 countries warned at its opening Monday that those refusing to adjust to the planet's rising temperatures "will be on the wrong side of history." (AP Photo/Andrea Comas)

CDU party chairwoman Annegret Kramp-Karrenbauer takes a seat in an electric ID.3 car displayed by the car manufacturer Volkswagen at the German Christian Democrats Party (CDU) convention in Leipzig, Germany, Saturday, Nov. 23, 2019. (AP Photo/Jens Meyer)

FILE -- This Aug. 9, 2019 file photo shows the Bayer logo at the main chemical plant of German Bayer AG in Leverkusen, Germany. Bayer subsidiary Monsanto has pleaded guilty to spraying a banned pesticide on research crops on the Hawaii island of Maui in 2014, prosecutors said. (AP Photo/Martin Meissner)

FILE - In this Monday, Oct. 30, 2017, file photo, vehicles crowd Highway 50 in Sacramento, Calif. California is broadening its effort to block the Trump administration from ending its authority to set greenhouse gas emission and fuel economy standards for cars and trucks. It's joined by 23 states and four cities in suing the U.S. Environmental Protection Agency on Friday, Nov. 15, 2019. (AP Photo/Rich Pedroncelli, File)

Ted Wells, Jr., left, the lead attorney for Exxon, leaves Manhattan Supreme court with a colleague Thursday, Nov. 7, 2019, in New York. New York's attorney general is accusing Exxon Mobil of misleading investors about how profitable the company will remain as governments impose stricter regulations to combat global warming. (AP Photo/Frank Franklin II)

FILE - In this July 27, 2018 photo, the Dave Johnson coal-fired power plant is silhouetted against the morning sun in Glenrock, Wyo. The Trump administration is proposing easing more Obama-era protections on contaminants from coal-fired power plants. Environmental Protection Agency administrator Andrew Wheeler signed a proposal Monday overhauling a 2015 rule on release of contaminated wastewater from power plants. The EPA says the change will save $175 million annually in compliance costs.(AP Photo/J. David Ake)

An anti-government protester dressed as the Joker holding a Mapuche flag, strikes a pose in front of police near La Moneda presidential palace in Santiago, Chile, Wednesday, Oct. 30, 2019. Chilean President Sebastián Pinera cancelled two major international summits after nearly two weeks of nationwide protests over economic inequality that have left at least 20 dead and damaged businesses and infrastructure around the country.(AP Photo/Rodrigo Abd)

Dutch construction workers gather for a demonstration against the government’s environmental rules, in The Hague, Netherlands on Wednesday, Oct. 30, 2019. The industry is protesting government limits on nitrogen emissions and rules about transporting sand and earth contaminated with tiny amounts of chemicals known as PFAS. (AP Photo/Mike Corder)