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President Donald Trump speaks to supporters. The day before, his homeland security secretary let it be known she considered quitting. (Photo by Scott Olson/Getty Images)

President Trump sees his improvisational and impulsive style as the indispensable key to his leadership. Those around him often see it as infuriating — and reason to quit. 

The latest incident: "Kirstjen Nielsen, the homeland security secretary, told colleagues she was close to resigning after President Trump berated her on Wednesday in front of the entire cabinet for what he said was her failure to adequately secure the nation’s borders," the N.Y. Times and others report.

The list of top Trump officials who have threatened to quit after Trump pulled a Trump is astonishing:

Reality check: In Normal Times, over the course of an entire presidency it's unusual for even one or two top-level people to let it be known publicly they want to resign out of frustration.

Subscribe to Axios AM/PM for a daily rundown of what's new and why it matters, directly from Mike Allen.
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Go deeper

23 mins ago - Health

First blood test to help diagnose Alzheimer's goes public

Photo: Jerry Naunheim Jr./C2N Diagnostics via AP

A non-COVID medical breakthrough: People over 60 now have access to a blood test for Alzheimer's disease.

Why it matters: The existing PET brain scan test costs some people about $5,000 and often isn't covered by insurance, AP reports.

Updated 36 mins ago - Politics & Policy

Wisconsin, Arizona certify Biden's victories

Photo: Demetrius Freeman/The Washington Post via Getty Images

Arizona and Wisconsin officials confirmed the presidential election results in their states, formalizing President-elect Joe Biden's victories in the key battlegrounds.

Why it matters: The moves deal yet another blow to President Trump's efforts to block or delay certification in key swing states that he lost. 

4 hours ago - Podcasts

Former Georgia Gov. Roy Barnes on the Senate runoffs

The future of U.S. politics, and all that flows from it, is in the hands of Georgia voters when they vote in two Senate runoffs on January 5.

Axios Re:Cap digs into the election dynamics with former Georgia Gov. Roy Barnes, a Democrat who served between 1999 and 2003.