Former Nixon White House Counsel John Dean, a key figure in the Watergate scandal, will outline to lawmakers the parallels between Watergate and the 448-page Mueller report into alleged Russian collusion with the Trump campaign.

Russian efforts to interfere in the 2016 election to help Trump win, Dean will say, according to his prepared testimony, are similar to the operation to break into the Democratic National Committee office in the Watergate office building in Washington, D.C.