ABC News’ Powerhouse Politics roundtable breaks down 1st presidential debate.

“There’s work to be done on both sides,” said Chris Christie, who helped prep President Donald Trump for the debate.

Watch video on channel "ABC News"
Jill Biden makes history as 1st first lady to hold full-time job.

Jill Biden makes history as 1st first lady to hold full-time job.

ABC News’ senior White House correspondent Mary Bruce shares what to know about the new first family occupying the White House.

COVID-19 vaccine supplies dwindle as Biden takes control.

COVID-19 vaccine supplies dwindle as Biden takes control.

The new administration began on the deadliest day of the pandemic thus far with more than 4,400 lives lost in the U.S. in just 24 hours.

Jill Biden makes history as 1st first lady to hold full-time job.

Jill Biden makes history as 1st first lady to hold full-time job.

ABC News’ senior White House correspondent Mary Bruce shares what to know about the new first family occupying the White House.

Biden becomes 46th president of US in historic inauguration.

Biden becomes 46th president of US in historic inauguration.

Joe Biden was sworn in minutes after Kamala Harris became the first female, Black and South Asian vice president in a ceremony marked by messages of hope and healing and star performances.

Presidential historian: 'We’ve rarely seen America so fractured'.

Presidential historian: 'We’ve rarely seen America so fractured'.

Historian Mark Updegrove speaks about the importance of seeing outgoing and incoming presidents together on Inauguration Day and the challenge of uniting the country.