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Graphic: Axios

"Axios on HBO" last night aired a preview of "A Warning," by the senior administration official who penned a New York Times op-ed that infuriated President Trump and sparked an ultimately fruitless leak investigation.

Why it matters: Sources say the book points to multiple instances of misconduct and attempts to violate the law, and some of the allegations could be used a bread crumbs for impeachment investigators to follow — obstruction of Congress, abuse of power, offering pardons.

Two appetizers from the book, out Nov. 19:

1. "One time, a leader of a national security agency asked the president for support in convincing Congress to pass an upcoming defense bill":"

Don't worry about Congress," the president said. "Just do what you need to do.
"The official explained that it wasn't like that ...
"No, no. It doesn't matter. You have my permission to do whatever you need to do, okay? Just forget about them."

2. "The president has proposed doing away with judges on more than one occasion":

Too many of his policies are getting stuck in legal limbo, he says.
"Can we just get rid of the judges? Let's get rid of the fucking judges," Trump fumed one morning. "There shouldn't be any at all, really."
He went a step further and asked his legal team to draft up a bill and send it to Congress to reduce the number of federal judges.
Staff ignored the outburst and the wacky request.

White House statement on "A Warning":

The coward who wrote this book didn’t put their name on it because it is nothing but lies. Real authors reach out to their subjects to get things fact checked — but this person is in hiding, making that very basic part of being a real writer impossible.

Go deeper:

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Go deeper

Perfect storm brewing for extreme politicians

Data: Axios research; Table: Jacque Schrag/Axios

Redistricting and a flood of departing incumbents are paving the way for more extreme candidates in this year's midterm elections.

Driving the news: At least 19 House districts in 12 states are primed to attract such candidates — hard partisans running in strongly partisan districts — according to an Axios analysis of districts as measured by the Cook Political Report's Partisan Voter Index (PVI).

Updated 3 hours ago - Technology

3D printing's next act: big metal objects

Chief Scientist Andy Bayramian makes modifications to the laser system on Seurat's 3D metal printer. Photo courtesy of Seurat Technologies.

A new metal 3D printing technology could revolutionize the way large industrial products like planes and cars are made, reducing the cost and carbon footprint of mass manufacturing.

Why it matters: 3D printing — also called additive manufacturing — has been used since the 1980s to make small plastic parts and prototypes. Metal printing is newer, and the challenge has been figuring out how to make things like large car parts faster and cheaper than traditional methods.

Updated 5 hours ago - Technology

Mayors see cryptocurrency as a way to address income inequality

Illustration: Sarah Grillo/Axios

At the U.S. Conference of Mayors' meeting in D.C. this week, there's buzz around the idea of giving cryptocurrency accounts to low-income people.

Why it matters: Cities have been experimenting with newfangled ways to address income inequality — like guaranteed income programs — and the latest wave of trials could involve paying benefits or dividends in bitcoin, stablecoin or other digital currencies.