World News Roundup Late Edition

Pfizer says it's booster shot increases protection against the Omicron variant better than the initial two shots. Instagram chief grilled by Senate panel. Former Trump White House chief of staff sues the House committee investigating the Capitol attack. Jussie Smollett trial in the hands of the jury.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.