Here’s a look at the top stories making headlines on the “CBS Evening News with Norah O’Donnell.” Source

President Trump left the NATO summit early. It came after a hot mic moment, where U.S. allies were caught on camera laughing at his expense. Ben Tracy reports. Source

Three constitutional scholars told lawmakers they believe there is enough evidence to impeach the president for abusing his power and risking national security. But another said the case is thin. Nancy Cordes reports. Source

A California police officer shot dead in his home — his ex-wife admits she pulled the trigger. Did a photo posted on social media lead to the officer’s death? Correspondent Erin Moriarty reports in an all-new “48 Hours” airing Saturday, December 7 at 10/9c on CBS. Source

Nineteen women and one man came forward, saying they were raped or sexually assautled by Lyft drivers. The incidents took place across the country. Jonathan Vigliotti reports. Source

Kristen Hoffman fought breast cancer a year ago. Now she’s battling her insurance company to pay for her mammograms. Anna Werner explains. Source

The Organ Care System, or Heart in a Box, gives surgeons about 12 hours to get the heart to the recipient, double the amount of time in a traditional transplant Source

“Some people have figured out, you know, it would be a lot cheaper to spend a few hundred mil just buying the presidency instead of paying that 2% wealth tax,” the 2020 candidate said in the new ad. Source

A 1930s law exempts hourly movie house employees from protections given to other low-wage workers. Source

During the House Judiciary Committee’s impeachment hearing on Wednesday, constitutional law scholar Pamela Karlan criticized President Trump’s phrasing during his July 25 call with the Ukrainian president. Karlan said that when Mr. Trump asked Volodymyr Zelensky to “do us a favor, though,” he was using the “royal we.” “Only kings say ‘us’ when they mean ‘me,'” she said. Source