Presindent Trump’s legal team issued a brief attacking the impeachment charges as “flimsy” a day before the Senate trial is set to begin. Reuters White House correspondent Jeff Mason, CBSN political contributor Molly Hooper, and CBS News legal analyst Kim Wehle spoke to CBSN’s “Red & Blue” about what to expect when the trial gets underway. Source

New research shows a link between marijuana and heart risks. At least 2 million adults with cardio-vascular disease have used marijuana. Dr. Tara Narula reports. Source

The threat of violence from white supremacist groups meant a heavy police presence in Richmond, Virginia, as thousands of gun rights supporters rallied on the Capitol grounds. Jeff Pegues reports. Source

In 1864, one of the most famous people in the United States became the Republican presidential nominee, but his name has since been largely forgotten. Steve Inskeep, host of NPR’s Morning Edition, spoke to CBSN’s Tanya Rivero about his new book, “Imperfect Union: How Jessie and John Frémont Mapped the West, Invented Celebrity, and Helped Cause the Civil War.” Source

Americans across the country honored Reverend Martin Luther King Jr. In Atlanta, they packed Ebenezer Baptist Church where he once preached. Adriana Diaz reports. Source

Kansas City is again one of three big cities without a street named after Dr. King. Source

Reverend David Kennedy has been fighting for civil rights in South Carolina for decades. On this MLK Day, CBSN political contributor and Democratic strategist Antjuan Seawright commemorates his work, inspired by the empathy of the late Dr. King. Source

Prince Harry and his wife Meghan are on their own. Harry says he is taking a “leap of faith” by giving up his royal duties to lead a more peaceful life. Charlie D’Agata reports. Source

Prince Harry and his wife Meghan have agreed to give up their royal titles and state funding while pursuing more independent lives. CBSN royal contributor Victoria Arbiter explains what their future might look like. Source

According to a report from the Center for Public Integrity, President Trump’s reelection committee has more than $841,000 worth of unpaid bills linked to the cost of securing campaign rallies. The Center for Public Integrity’s editor-at-large David Levinthal joins CBSN’s “Red and Blue” to discuss why the Federal Election Commission is unable to enforce campaign finance law. Source