Here comes the Notre Dame fire investigation

Photo: Chesnot/Getty Images

It's been more than a week since the Notre Dame cathedral caught fire, and French investigators said they have yet to rule out any potential causes of the blaze, Reuters reports.

  • "Investigators are expected to search through the fire-damaged cathedral for remains of cables, lights or parts of circuitry that might give clues," The Guardian reports.

The big picture: Several potential causes still linger — electrical lifts from the outside of the building, electrical wiring on the inside and cigarette butts found inside. Officials believe the cause was possibly a short circuit linked to renovation.

Institutions connected to the possible causes deny being responsible:

  • The scaffolding company that worked on the roof says the lifts were well maintained.
  • The cathedral's spokesperson says the electrical wiring was properly installed, per Reuters.
  • Construction company Le Bras Freres confirmed its workers smoked cigarettes at the construction site, but deemed that cause impossible, its spokesperson told AP.

Go deeper:

What's next

New York Times endorses Elizabeth Warren and Amy Klobuchar for president

Democratic presidential candidates Sens. Elizabeth Warrenand Sen. Amy Klobuchar at the December 2020 debatein Los Angeles. Photo: Justin Sullivan/Getty Images

The New York Times editorial board has endorsed Sens. Elizabeth Warren and Amy Klobuchar for president, in a decision announced on national television Sunday night.

Why it matters: The board writes in its editorial that its decision to endorse two candidates is a major break with convention that's intended to address the "realist" and "radical" models being presented to voters by the 2020 Democratic field.

Go deeperArrow1 hour ago - Media

What's next in the impeachment witness battle

Sens. Susan Collins (R-Maine) and Lisa Murkowski (R-Alaska). Photo: Tom Williams/CQ-Roll Call, Inc via Getty Images

Senators will almost certainly get to vote on whether or not to call impeachment witnesses. The resolution laying out the rules of the trial, which will be presented Tuesday, is expected to mandate that senators can take up-or-down votes on calling for witnesses and documents.

Yes, but: Those votes won't come until the House impeachment managers and President Trump's defense team deliver their opening arguments and field Senators' questions.

Inside Trump's impeachment strategy: The national security card

White House counsel Pat Cipollone and acting Chief of Staff Mick Mulvaney. Photo: Jabin Botsford/The Washington Post via Getty Images

Trump officials say they feel especially bullish about one key argument against calling additional impeachment witnesses: It could compromise America's national security.

The big picture: People close to the president say their most compelling argument to persuade nervous Republican senators to vote against calling new witnesses is the claim that they're protecting national security.