Trump, reportedly, called Facebook chief executive Mark Zuckerberg while he was president to protest the social network's Oversight Board, which is preparing to rule over his suspension, The Independent reported on Saturday.

The former U.S. president called the Facebook top boss to oppose the addition of Pamela Karlan, a Law professor from Stanford University who testified at his 2019 impeachment, according to a report by Kate Klonick in the The New Yorker, Friday.

Facebook's Oversight Board is comprised of 20 human rights and legal experts that can reject the decision of Zuckerberg on who gets banned from the site.

The oversight panel has two months to deliberate on whether Trump should be reinstated to Facebook after it suspended the former president's account.

Calling the former commander in chief a "clear and present danger," a group of civil rights proponents and scholars urged the oversight committee Friday to permanently restrict Trump from the platform after his account was suspended following the deadly siege on the U.S. Capitol on Jan. 6.

The group described Trump as a serial abuser of social media policies who poses "a danger to democracy and human life."

The content oversight body has received at least 9,000 comments about Facebook's decision to indefinitely restrict the former president from posting to his account, C/NET reported.

"He used Pam as an example of how the board was this deeply offensive thing to him," a person with knowledge of the issue said in remarks quoted by the The New Yorker.

"This is a model we are testing here to find out if this is the kind of institution that can have an impact in one sphere of Facebook and the content moderation challenges they face," Oversight Board Chief of Communications Dex Hunter-Torricke said in remarks quoted by TechCrunch.