Gov. Hogan's call to "get the facts" echoed his father, former Maryland Congressman Larry Hogan Sr., who spent hours in hearings and at home poring over evidence as the Watergate scandal unfolded and eventually broke with his party, voting to impeach then-President Nixon.
The historian related Attorney General William Barr to former Attorney General John Mitchell, who left the Justice Department to work on Nixon's re-election campaign.
"You'll have a very Democratic Senate next year," former Massachusetts Governor Bill Weld said.
"We've never had a president of the United States who mortgaged our foreign policy interests," Watergate journalist Carl Bernstein added.
"Nixon was a patriot," J.W. Verret said. "Of all the crazy things he did, he never would have accepted help from a foreign power for his own personal interest in an election."
The unearthing of one of America's biggest conspiracies is still known as one of the best shows of investigative journalism in political history.
A recording from 1971 has emerged with the future U.S. president making a racial slur.
The veteran journalist said the situation challenged "whether our institutions are able to function in this country to deal with a president of the United States who is unique in our history, who has nothing but contempt for Democratic traditions and the rule of law."
Speaking about the Russia investigation and the Mueller report, McConnell, the Senate's majority leader, said it's "case closed," drawing criticism from Minority Leader Schumer.
Our federal criminal law applied to the the physical break-in at Watergate. But it doesn't work as clearly for the intangible documents stolen from the DNC.
Inspector General Michael Horowitz has been investigating whether the FBI abused FISA procedures in its targeted Russian-related surveillance operations, and his report is expected by June.
"One of the post-Watergate norms was that attorney generals did not serve as the president's personal counsel," said John Dean, who served as White House counsel to President Richard Nixon.
Pointing to Trump's efforts at "shutting down enemies" and "trying to suppress stories," as well as the president's allegations that a so-called "deep state" and the media were aligned against him, Elliot Williams compared the current administration to that of former President Richard Nixon.
During a segment on MSNBC's "The Beat," Nick Ackerman told host Ari Melber that today's ruling could pressure Manafort to "tell the truth."
Watergate journalist Bob Woodward said Trump "does not know what his self-interest is," often refusing to heed the counsel of his close advisers trying to steer him through issues, crises and scandals.
"This is about the most serious counterintelligence people we have in the U.S. government saying, 'Oh, my God, the president's words and actions lead us to conclude that somehow he has become a witting, unwitting, or half-witting pawn," Carl Bernstein said.
Watergate journalist Elizabeth Drew says she does not believe the Republican-dominated Senate would save Trump should the House vote to impeach him.
A Watergate prosecutor suggested that Trump could possibly be in more trouble than Nixon.
"Trump's is making the long nightmare of Nixon's Watergate seem like a brief idyllic daydream," tweeted John Dean.
"The cover-up is always worse than the crime, and this one is very shady," the Watergate lawyer said.
"Comical to watch @CNN covering for leftist hack @carlbernstein," Trump Jr. tweeted.