Pollution laws and regulations

FILE - This undated file photo shows Barrick Goldstrike Mines' Betze-Post open pit near Carlin, Nev. A three-judge panel with the U.S. Court of Appeals for the District of Columbia ruled Friday, July 19, 2019, that state and federal programs ensure mining companies take financial responsibility for their pollution. (Adella Harding/The Daily Free Press via AP, File)

FILE - In this Feb. 14, 2017, file photo, a rooftop is covered with solar panels at the Brooklyn Navy Yard in New York. The Manhattan skyline is at top. A new law signed Thursday by New York Gov. Andrew Cuomo sets the nation's most aggressive targets for reducing carbon emissions and is intended to drive dramatic changes over the next 30 years. It calls for all the state's electricity to come from renewable, carbon-free sources such as solar, wind and hydropower. Transportation and building heating systems would also run on clean electricity rather than oil and gas. (AP Photo/Mark Lennihan, File)

File---Picture taken Oct.31, 2018 shows cars queuing in a traffic jam when commuting to Frankfurt, Germany. (AP Photo/Michael Probst)

FILE - In this Sept. 24, 2018, file photo, from left, Cal/EPA Secretary Matthew Rodriguez, California Air Resources Board Chair Mary Nichols and California Attorney General Xavier Becerra talk to the media in Fresno, Calif. Nichols says she’s not optimistic about striking a compromise with the Trump administration over its efforts to relax mileage standards, resolving a bitter standoff threatening to unleash years of court fights and confusion in the U.S. auto industry. (AP Photo/Gary Kazanjian, File)

President Donald Trump pauses as he speaks during an event about the environment in the East Room of the White House, Monday, July 8, 2019, in Washington. (AP Photo/Alex Brandon)

FILE - In this June 27, 2019 file photo, a woman rides a horse as truckers and loggers opposed to a carbon-capping bill hold a rally at the Capitol in Salem, Ore. When Democrats won a supermajority in the Oregon Legislature last November, it seemed they had a clear path ahead to combat global warming, enact gun control and pursue other liberal goals, but instead, it's been a bumpy road, and Democrats have learned the limits of power during the Oregon Legislature's most acrimonious session in memory as Republican lawmakers boycotted the Senate twice and also fled the state after Democratic Gov. Kate Brown ordered police after them. (Noble Guyon/The Oregonian via AP, File)

Oregon Gov. Kate Brown speaks with the media at the Capitol in Salem, Ore., Monday, July 1, 2019. Brown said Monday that she's ready to use her executive power to lower carbon emissions following a political crisis in which Republican state senators fled the state for more than a week to thwart climate legislation. (AP Photo/Sarah Zimmerman)

Lawmakers convene at the Oregon Senate after the minority Republicans ended a walkout they had begun on June 20 over a carbon-emissions bill they said would harm their rural constituents, at the Oregon Senate in Salem, Ore., Saturday, June 29, 2019. Nine of the 12 minority Republicans returned after Senate President Peter Courtney said the majority Democrats lacked the votes to pass the legislation aimed at countering climate change. ( AP Photo/Andrew Selsky)

Truckers and loggers opposed to the carbon capping bill hold a rally at the Oregon Capitol Thursday morning, June 27, 2019. - Truckers and loggers opposed to the carbon capping bill hold a rally at the Oregon Capitol Thursday morning, June 27, 2019. (Noble Guyon/The Oregonian via AP)