Yearend Roundup Part 1 12/20

2019 AND the decade are coming to an end. Donald Trump became the third U.S president in history to be impeached by the House of Representatives. Meanwhile, the race to the White House kicked off with as many as a two dozen candidates. Mother Nature ravaged the east and west coast with hurricanes and wildfires. Vaping became a major health concern among teenagers. And violent protests erupted in Honk Kong. Plus -- a look back on the lives of the public figures we lost this year. Correspondent Steve Dorsey will have these stories and more on the CBS News Yearend Roundup.