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Photo: Olivier Douliery/AFP via Getty Images

The House Judiciary Committee on Monday released the names of the four legal scholars who will serve as witnesses for its first impeachment hearing on Wednesday at 10 a.m.

The big picture: The hearing will focus on the constitutional grounds for impeachment and will examine whether President Trump's actions toward Ukraine qualify as high crimes and misdemeanors. Trump's lawyers said in a letter Monday that they will not participate in the hearing, but left open the possibility that they will send counsel to represent the president in future hearings that center on the actual substance of the Ukraine allegations.

The witnesses:

  • Noah Feldman
    • Felix Frankfurter Professor of Law and Director, Julis-Rabinowitz Program on Jewish and Israeli Law
    • Harvard Law School
  • Pamela S. Karlan 
    • Kenneth and Harle Montgomery Professor of Public Interest Law and Co-Director, Supreme Court Litigation Clinic
    • Stanford Law School
  • Michael Gerhardt 
    • Burton Craige Distinguished Professor of Jurisprudence
    • The University of North Carolina School of Law
  • Jonathan Turley
    • J.B. and Maurice C. Shapiro Professor of Public Interest Law
    • The George Washington University Law School

Go deeper: What to expect from the next phase of impeachment

Go deeper

Fringe right plots new attacks out of sight

Illustration: Aïda Amer/Axios

Domestic extremists are using obscure and private corners of the internet to plot new attacks ahead of Inauguration Day. Their plans are also hidden in plain sight, buried in podcasts and online video platforms.

Why it matters: Because law enforcement was caught flat-footed during last week's Capitol siege, researchers and intelligence agencies are paying more attention to online threats that could turn into real-world violence.

Kids’ screen time up 50% during pandemic

Illustration: Sarah Grillo/Axios

When the coronavirus lockdowns started in March, kidstech firm SuperAwesome found that screen time was up 50%. Nearly a year later, that percentage hasn't budged, according to new figures from the firm.

Why it matters: For most parents, pre-pandemic expectations around screen time are no longer realistic. The concern now has shifted from the number of hours in front of screens to the quality of screen time.

In photos: D.C. and U.S. states on alert for pre-inauguration violence

National Guard troops stand behind security fencing with the dome of the U.S. Capitol Building behind them, on Jan. 16. Photo: Kent Nishimura / Los Angeles Times via Getty Images

Security has been stepped up in Washington, D.C., and state capitols across the U.S. as authorities brace for potential violence this weekend.

Driving the news: Following the Jan. 6 insurrection at the U.S. Capitol by some supporters of President Trump, the FBI has said there could be armed protests in D.C. and in all 50 state capitols in the run-up to President-elect Joe Biden's inauguration Wednesday.

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