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Illustration: Sarah Grillo/Axios

A group of insurers will make their case to the Supreme Court today for billions of dollars in Affordable Care Act payments.

Driving the news: The court will hear oral arguments in a long-running dispute over the ACA’s risk corridors program. Insurers say they’re owed billions of dollars from that program; the government says it doesn’t have to pay.

Why it matters: The implications for the ACA are modest, but it's a lot of money for these insurers — about $12 billion, all told.

Risk corridors were designed to even out the ACA’s early days. Insurers with a better-than-expected experience in the exchanges paid in, and that money was then paid out to insurers that had a worse-than-expected launch.

  • The amount the program was supposed to pay out exceeded the amount insurers had paid in. The assumption, at the time, was that the Department of Health and Human Services (HHS) would make up the difference itself.
  • But then Congress passed an appropriations rider saying HHS couldn’t use its own money to cover risk-corridors payments, leaving billions of dollars unpaid.

Insurers sued, claiming HHS had essentially reneged on a promise, only after insurers put themselves on the line in a new marketplace under the expectation that this safety net would be there.

The other side: The government argues that “Congress did not expose the federal fisc to that massive liability” — that it never intended to create an open-ended expense “based on criteria that depended largely on the insurers’ own business judgments.”

Go deeper: The return of the ACA wars

Go deeper

Updated 7 hours ago - World

Mexican President López Obrador tests positive for coronavirus

Mexico's President Andrés Manuel López Obrador during a press conference at National Palace in Mexico City, Mexico, on Wednesday. Photo: Ismael Rosas/Eyepix Group/Barcroft Media via Getty Images

Mexican President Andrés Manuel López Obrador announced Sunday evening that he's tested positive for COVID-19.

Driving the news: López Obrador tweeted that he has mild symptoms and is receiving medical treatment. "As always, I am optimistic," he added. "We will all move forward."

8 hours ago - Politics & Policy

Sarah Huckabee Sanders to run for governor of Arkansas

Sarah Huckabee Sanders at FOX News' studios in New York City in 2019. Photo: Steven Ferdman/Getty Images

Former White House press secretary Sarah Huckabee Sanders will announce Monday that she's running for governor of Arkansas.

The big picture: Sanders was touted as a contender after it was announced she was leaving the Trump administration in June 2019. Then-President Trump tweeted he hoped she would run for governor, adding "she would be fantastic." Sanders is "seen as leader in the polls" in the Republican state, notes the Washington Post's Josh Dawsey, who first reported the news.

Coronavirus has inflamed global inequality

Illustration: Aïda Amer/Axios

History will likely remember the pandemic as the "first time since records began that inequality rose in virtually every country on earth at the same time." That's the verdict from Oxfam's inequality report covering the year 2020 — a terrible year that hit the poorest, hardest across the planet.

Why it matters: The world's poorest were already in a race against time, facing down an existential risk in the form of global climate change. The coronavirus pandemic could set global poverty reduction back as much as a full decade, according to the World Bank.