ABC's "Nightline" co-anchor Byron Pitts remembers the late Rep. John Lewis on what would have been his 81st birthday.

On ABC's "This Week," FiveThirtyEight's Nate Silver talks about the retribution seven Republican senators who voted in favor of former President Donald Trump's impeachment might face.

Trump is expected to make his first speech since leaving the White House next week.

Biden is making a surprise visit to meet with his longtime Senate colleague Bob Dole in Washington, D.C., on Saturday.

Biden “is visiting his close friend,” according to the White House, following the 97-year-old’s announcement on Thursday morning that he had been diagnosed with stage 4 lung cancer. In a tweet, Dole said he would begin treatment on Monday.

-ABC News' Justin Gomez

Former President Trump will speak at the Conservative Political Action Conference (CPAC) next week, his first major appearance since leaving office last month, a source familiar with the situation confirmed to ABC News.

Trump’s speech next Sunday afternoon will address the future of the Republican Party and the conservative movement, as well as Biden’s immigration policies, the source added.

-ABC News' Will Steakin

Visiting a Pfizer  COVID-19 vaccine manufacturing site Friday, Biden saw firsthand the efforts to ramp up manufacturing but also acknowledged he can't predict exactly when life will return to normal.

"I can't give you a date when this crisis will end, but I can tell you we're doing everything possible to have that day come sooner rather than later," Biden said at Pfizer's  Kalamazoo, Michigan, site.

The site is a critical hub for manufacturing the vaccine, the White House said, and the trip was designed to highlight Biden's efforts to increase manufacturing capacity and maximize distribution efficiency.

-ABC News' Molly Nagle and Sarah Kolinovsky