Freedom Caucus leader Rep. Andy Biggs calls Reps. Liz Cheney and Adam Kinzinger GOP "spies" amid their membership on House's Jan. 6 special committee.

The Capitol's attending physician reimposed the mask mandate earlier this week in response to the Delta coronavirus variant sweeping the US.

Republican lawmakers are under increasing pressure to persuade vaccine skeptics to roll up their sleeves and take the shots as a new, more contagious COVID-19 variant sen...