Memorable moments from Trump-Biden 2020 debate

WASHINGTON (NewsNation) — President Joe Biden and former President Donald Trump on Thursday will clash in a debate in Atlanta.

It will be the first time on live television that a sitting president will face off against a former president.

These two have a history going back to 2020 when they previously faced off in presidential debates ahead of the presidential election.

Here is a look back four years ago at their most contentious debate moments.

'Will you shut up, man?'

Just about 15 minutes into their first debate, the line of questioning turned to Biden and whether he supported ending the Senate filibuster or intended to pack the U.S. Supreme Court if elected.