Illustration: Aïda Amer/Axios

Environmental Protection Agency administrator Andrew Wheeler will announce today his plans to review — and likely make more stringent — air pollution standards for heavy-duty trucks.

Why it matters: This is the first time the EPA under President Trump is looking to significantly tighten — not loosen — air pollution regulations. Most of EPA's focus for the last nearly two years has been to roll back environmental rules issued by then-President Barack Obama.

Driving the news: Wheeler will announce his intent to tighten regulations limiting nitrogen oxide emissions from big trucks. Nitrogen oxide is a pollutant that contributes to smog and poor air quality. The current standards haven't been reviewed since 2001. Today's news is not a formal rule-making step, and EPA officials say the proposal isn’t expected until early 2020, with a final by the end of that year — right after the next presidential campaign.

Yes, but: Wheeler and Bill Wehrum, the EPA's assistant administrator for air and radiation, said they don’t yet have a specific target in mind for the new standards and may be able to cut pollution without increasing the standard itself.

  • "One thing we know is these types of vehicles can be made cleaner, lower emitting," Wehrum said. He went on to say that the rules could be changed in a way that lowers emissions without actually lowering the standard. He added that the agency would "definitely look to see if the numbers need to come down."

One level deeper: This is an example of industry wanting the EPA to update a standard when they have an administration friendlier to their position than, say, an EPA under President Hillary Clinton might have been.

  • Wehrum said he’s met with many industry groups and companies, saying, "What we have consistently heard, is they think it’s time for an update."
  • State air agencies had asked Obama's EPA to lower the standard, and the agency said it would in late 2016, right after Trump's victory.

The big picture: Expect this rule to be the exception, not the new norm, of an agency still primarily focused on rolling back the aggressive regulatory agenda of the last president.

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Updated 48 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 3 a.m. ET: 30,782,337 — Total deaths: 957,037— Total recoveries: 21,032,539Map.
  2. U.S.: Total confirmed cases as of 3 a.m. ET: 6,764,962 — Total deaths: 199,258 — Total recoveries: 2,577,446 — Total tests: 94,211,463Map.
  3. Politics: In reversal, CDC again recommends coronavirus testing for asymptomatic people.
  4. Health: The dwindling chances of eliminating COVID-19.
  5. World: Guatemalan president tests positive for COVID-19 — The countries painting their pandemic recoveries green.

The positions of key GOP senators on replacing Ruth Bader Ginsburg

Senate Majority Leader Mitch McConnell talks to reporters on Capitol Hill last Thursday. Photo: Chip Somodevilla/Getty Images

With President Trump planning to nominate his third Supreme Court justice nominee by next week, key Republican senators are indicating their stance on replacing the late Justice Ruth Bader Ginsburg just over six weeks out from Election Day.

The big picture: Senate Majority Leader Mitch McConnell (Ky.) has vowed that "Trump’s nominee will receive a vote on the floor of the United States Senate." But Sen. Lisa Murkowski (Alaska) told Alaska Public Media, "I would not vote to confirm a Supreme Court nominee. We are 50 some days away from an election."

Updated 3 hours ago - Politics & Policy

ActBlue collects a record $91 million in hours after Ginsburg's death

A makeshift memorial in honor of Justice Ruth Bader Ginsburg in front of the U.S. Supreme Court on Sept. 19. Photo: Samuel Corum/Getty Images

ActBlue received a record $91.4 million in the 28 hours following Supreme Court Justice Ruth Bader Ginsburg's death, the Democratic donation-processing site confirmed to Axios late Saturday.

Why it matters via the New York Times: "The unprecedented outpouring shows the power of a looming Supreme Court confirmation fight to motivate Democratic donors."