Weekend Roundup 12/30

In this second half of the "Weekend Roundup" year-end report CBS's Steve Kathan looks back on the COVID-19 pandemic. Correspondent Allison Keyes hears from CBS's Manuel Bojorquez about how the virus spread in Latin America and CBS's Charlie D'Agata on the coronavirus vaccine in Europe. Allison speaks with CBS News Chief Congressional Correspondent Nancy Cordes about the year on Capitol Hill, including President Trump's impeachment trial and CBS News White House Correspondent Steven Portnoy revisits the presidential election. In this week's Kaleidoscope segment, Allison speaks with CBS News Chief Justice and Homeland Security Correspondent Jeff Pegues about a year in which the police killing of a black man, George Floyd, which sparked a global battle against brutality and racism.