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Photo: "Axios on HBO"

Sen. Bill Cassidy (R-La.), a physician, told me during an "Axios on HBO" interview that he favors cognition tests for aging leaders of all three branches of government.

Why it matters: Wisdom comes with age. But science also shows that we lose something. And much of the world is now run by old people — including President Biden, 78 ... Speaker Pelosi, 81 ...  Senate Majority Leader Chuck Schumer, 70 ... and Senate Minority Leader Mitch McConnell, 79.

Cassidy, a gastroenterologist, told me during our wide-ranging interview in Chalmette, La., that in your 80s, you begin a "rapid decline."

  • Noting he wasn't talking about specific people, Cassidy said: "It's usually noticeable. So anybody in a position of responsibility who may potentially be on that slope, that is of concern. And I'm saying this as a doctor."
  • "I'm told that there have been senators in the past who, at the end of their Senate terms were senile," Cassidy added. "I'm told that was true of senators of both parties."

Cassidy said it'd be reasonable for Supreme Court justices, members of Congress, and executive branch leaders to submit to an annual evaluation in which they would have to establish cognitive sharpness.

  • "We each have a sacred responsibility to the people of the United States," Cassidy said. "It is not about me. It is about my ability to serve the people."
  • Asked if he'd favor such a test for those leaders, Cassidy said: "Of course."

🎬 Watch a clip: A rare GOP smack to Trump ... Cassidy says Donald Trump might lose the GOP nomination if he runs in 2024 — noting that Trump lost "the House, the Senate and the presidency in four years. Elections are about winning."

Go deeper: Cassidy warns of "true colors" test

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Go deeper

Republicans threaten to shut down government over vaccine mandates

Sen. Mike Lee (R-Utah) in the Capitol in November 2020. Photo: Joshua Roberts/Getty Images

Conservative Republicans in the House and Senate are planning to force a government shutdown Friday to deny funding needed to enforce the Biden administration's vaccine mandates on the private sector, according to Politico.

Why it matters: Congress has until the end of the week to pass a stopgap measure to extend funding into 2022, though objection from a small group of Republicans could shut down the government.

McConnell: No legislative agenda for 2022 midterms

Photo: Drew Angerer/Getty Images

Mitch McConnell has told colleagues and donors Senate Republicans won't release a legislative agenda before next year's midterms, according to people who've attended private meetings with the minority leader.

Why it matters: Every midterm cycle, there are Republican donors and operatives who argue the party should release a positive, pro-active governing outline around which candidates can rally. McConnell adamantly rejects this idea, preferring to skewer Democrats for their perceived failures.

Updated 2 hours ago - Politics & Policy

Prosecutors charge parents of Michigan school shooting suspect

Photo: Scott Olson/Getty Images

The parents of a 15-year-old accused of killing four students and wounding seven other people at a Michigan high school have been charged with four counts of involuntary manslaughter, according to court documents.

The latest: Lawyers for James and Jennifer Crumbley told the Detroit News they are "returning to the area to be arraigned," after law enforcement officials announced a search for the Crumbleys had been initiated.

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