Conservative radio host and former Rep. Joe Walsh (R-Ill.) announced on ABC's "This Week" that he is launching a primary challenge to President Trump in 2020.

"We've got a guy in the White House who’s unfit, completely unfit, to be president. And it stuns me that nobody stepped up, nobody in the Republican Party stepped up, because I’ll tell you what, George, everybody believes in the Republican party, everybody believes that he’s unfit."
"I’m running because he’s unfit. Somebody needs to step up and there needs to be an alternative. The country is sick of this guy’s tantrum. He’s a child. Again, the litany, he lies every time he opens his mouth. Look at what’s happened this week — the president of the United States, is tweeting us into a recession."

The big picture: Walsh isn't Trump's only primary challenger, as former Gov. Bill Weld (R-Mass.) has already launched a long-shot bid. But the Tea Party Republican would likely offer a different approach to the more traditional Weld, having created a brand for himself as a conservative activist unafraid to ruffle feathers. That has led Walsh to his fair share of controversy, including allegations of racist statements.

  • Walsh apologized for calling President Obama a "Muslim" and a "traitor," telling ABC: "I had strong policy disagreements with Barack Obama and too often I let those policy disagreements get personal."
  • Walsh laid the groundwork for a run at the presidency in a NY Times op-ed last week in which he stated the case for a contender from the right to challenge Trump. In the op-ed, Walsh said he gave Trump "a fair hearing" after voting for him in 2016, but he realized soon after he became president that he couldn’t support him.

The bottom line: President Trump has a near-90% approval rating within the Republican Party, and it will be incredibly difficult for Walsh or any primary challenger to replace him as the nominee.

Go deeper: Trump challenger Joe Walsh has an inflammatory record of his own

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Robert Mueller speaks out on Roger Stone commutation

Former Special Counsel Robert Mueller testifies before the House Permanent Select Committee on Intelligence on Capitol Hill on Wednesday July 24, 2019. Photo: The Washington Post / Contributor

Former special counsel Robert Mueller responded to claims from President Trump and his allies that Roger Stone was a "victim" in the Justice Department's investigation into Russian interference in the 2016 election, writing in a Washington Post op-ed published Saturday: "He remains a convicted felon, and rightly so."

Why it matters: The rare public comments by Mueller come on the heels of President Trump's move to commute the sentence of his longtime associate, who was sentenced in February to 40 months in prison for crimes stemming from the Russia investigation. The controversial decision brought an abrupt end to the possibility of Stone spending time behind bars.

Trump dons face mask during Walter Reed visit

Trump wearing a face mask in Walter Reed National Military Medical Center on July 11. Photo: Alex Edelman/AFP via Getty Images

President Trump wore a face mask during his Saturday visit to Walter Reed National Military Medical Center, according to AP.

Why it matters: This is the first known occasion the president has appeared publicly with a facial covering as recommended by health officials since the coronavirus pandemic began, AP writes.

Updated 9 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 5:30 p.m. ET: 12,607,510 — Total deaths: 562,338 — Total recoveries — 6,948,863Map.
  2. U.S.: Total confirmed cases as of 5:30 p.m. ET: 3,228,884 — Total deaths: 134,600 — Total recoveries: 983,185 — Total tested: 38,919,421Map.
  3. Public health: Jimmy and Rosalynn Carter: "Please wear a mask to save lives" Fauci hasn't briefed Trump on the coronavirus pandemic in at least two months — We're losing the war on the coronavirus.
  4. Food: How the coronavirus pandemic boosted alternative meat.
  5. Sports: Charge of "money grab" by college football.
  6. World: India reimposes lockdowns as coronavirus cases soar.