* Janet Yellen confirmed by Senate as Treasury Secretary
* House formally delivers Trump impeachment charge to Senate
* Biden to announce ban on new oil and gas drilling on federal lands
* Minnesota confirms case of more contagious coronavirus variant from Brazil
* Xi’s speech at World Economic Forum highlights US-China challenges
* China says it will conduct military exercises South China Sea this week
* Biden faces challenging balancing act in first call to Russia’s Putin
* Wall Street isn’t worried about sharp rise in federal debt–for now
* Market volatility in 2020 was no threat to index funds, study finds
* Will Fed’s Powell avoid past QE mistakes in the last year of his term?
* US economic growth trend strengthened slightly in December: