The Trump administration on Tuesday exempted oil and gas drilling in the Gulf of Mexico from the Endangered Species Act after Defense Secretary Pete Hegseth said environmentalists’ lawsuits against the industry threatened to hobble domestic energy supplies.

Last November, the Trump administration proposed a stricter definition for “Waters of the United States,” excluding seasonal streams, marshes, bogs, swamps and mangrove forests from protection under the 1972 Clean Water Act.

Last week, the Trump administration delivered a catastrophic blow to U.S. climate policy by repealing the longstanding scientific finding that planet-warming pollution poses a danger to humans. Now comes the yearslong race through the courts.

The EPA repealed the key underpinning of greenhouse gas emission regulations. Now environmental and health advocates are taking the agency to court.

Environmental groups described the move as the single biggest attack in U.S. history against federal authority to address climate change. Evidence backing up the endangerment finding has only grown stronger in the 17 years since it was approved, they said.

“ICE has not made any city that they’ve gotten into safer,” U.S. Sen Tammy Duckworth said.  “In fact, in every city they’ve gone into, they’ve created chaos.”

The plan, if finalized next year, would significantly reduce fuel economy requirements, which set rules on how far new vehicles need to travel on a gallon of gasoline, through the 2031 model year.

The federal government entered its sixth day of a shutdown Tuesday, leaving hundreds of thousands of employees furloughed.

After passing an emissions test, motorists can purchase their vehicle registration sticker at the DMV’s annex building without having to pay the additional $9.50 charged by outside vendors, according to the Illinois Secretary of State’s Office.

Chicago has more lead service lines than any other city in the U.S. with more than 400,000 lead water service lines are still active in the city. Local officials are not moving fast enough to address the cascading disparities and environmental injustices, community advocates say.

The pilot is a partnership between the Illinois secretary of state and the Illinois Environmental Protection Agency. Motorists are expected to test vehicle emissions every two years for cars older than four years.

The National Weather Service issued an air quality alert for the city on Thursday and kept extending it through Sunday night. There was no alert Monday.

U.S. Sens. Tammy Duckworth and Dick Durbin were among 17 lawmakers who signed a letter urging the Trump administration to reinstate Environmental Protection Agency employees placed on leave after they signed a statement criticizing the administration for “recklessly undermining the EPA mission.”

Smoke from Canadian wildfires settled over Chicago Thursday, with air quality reaching “unhealthy” levels for everyone. Air quality was far worse in parts of Canada closer to the fires.

Environmental advocates, elected leaders and workers at the Environmental Protection Agency gathered at Federal Plaza downtown Monday to push back against the president’s reported plans to repeal a key federal determination that allows the EPA to help combat climate change.

More than 170 EPA employees put their names to the document, with about 100 more signing anonymously out of fear of retaliation.