A gang of fraternity brothers of the Pi Kappa Phi fraternity appeared to be attacking a student and beating him badly in a disturbing video. The student said it started because the group thought he was a member of a rival frat. Now he is suing the fraternity and university. Laura Podesta reports. Source

The sixth Democratic presidential debate, set to be held in Los Angeles this week, is in jeopardy. On Sunday, all seven candidates scheduled to appear pledged to boycott the debate in support of striking workers at the site. Farrah Fazal reports. Source

House Republicans prepare to vote on articles of impeachment; Maryland gas station owner opens first gas-to-electric refueling station. Source

On Sunday, winter advisories and winter storm warnings are up from Colorado all the way to Pennsylvania. It already looks like the real deal in big parts of the country. Jeff Berardelli reports. Source

History will be made this week in Washington. For only the third time ever, the full House will vote on articles of impeachment against an American president. Republicans promise to “deep six” a Senate trial. Nikole Killion reports. Source

In February, 60 Minutes reported on a group of Nigerian women who survived being kidnapped, held captive and abused by Boko Haram. Last week, one of the survivors had surgery to help her walk again without a cane. Source

Newtown, Connecticut, on Saturday marked seven years since the school shooting that took the lives of 20 children and six staffers there. On Friday, thanks to their high school football team, the day ended in celebration with a victory at the state championship. Source

Julio Armando Gutierrez has been growing coffee in El Salvador for almost 40 years. He says the last few have been very tough. Source

From the USMCA trade agreement to a tentative federal spending deal, lawmakers managed to strike several bipartisan agreements all while the House Judiciary Committee held a marathon debate on articles of impeachment on Capitol Hill. Dan Balz, Washington Post’s chief correspondent covering national politics, joins CBSN for the Politics Week in Review. Source

Here’s a look at the top stories making headlines on the “CBS Weekend News with Elaine Quijano.” Source