Sen. Chuck Schumer (D-N.Y.) is officially Senate majority leader after the inauguration of Vice President Kamala Harris and the swearing-in of new Sens. Alex Padilla (D-Calif.), Jon Ossoff (D-Ga.) and Raphael Warnock (D-Ga.).
Why it matters: With a 50-50 Senate, Schumer will control a narrow majority with Harris as the tie-breaking vote. Democratic control of the Senate is crucial to President Biden's agenda, from getting his coronavirus relief proposal passed to forgiving student debt.
Supporters of former President Donald Trump who thought he was about to stop the inauguration, seize power and crush his enemies were left blinking in the sunlight Wednesday as President Biden took the oath of office.
Why it matters: It's an inflection point for anyone who realizes they've been strung along by QAnon and related strands of pro-Trump magical thinking. They could either retreat from conspiracy theories or tumble deeper down the rabbit hole.
President Biden has delivered his inaugural address at the Capitol, calling for an end to the politics as total war but warning that "we have far to go" to heal the country.
What's next: Biden swears in day one presidential appointees in virtual ceremony