Richard Nixon

"These facts that he laid out are so substantially similar to the matured allegations against Bill Clinton and Richard Nixon, it's clear where he was going," Andrew Napolitano explained.

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.

"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.

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.

"There is no circumstance whatsoever under which I will bear false witness against the president," said Stone. So why does he keep invoking Nixon?

Another president violated these, but America wouldn't allow it. Nixon resigned before Congress impeached him.

"If I had to channel a little of Richard Nixon, I think he'd tell this president he's going too far," said John Dean, Richard Nixon's White House counsel.

"Trump's is making the long nightmare of Nixon's Watergate seem like a brief idyllic daydream," tweeted John Dean.

Court documents unsealed after nearly 45 years show that a federal grand jury in February 1974 was prepared to indict Nixon.

President Richard Nixon obstructed an FBI investigation that would eventually topple his administration.

"Nixon Resigns," was blasted across the front page of multiple newspapers.

American people are being force-fed information leading to the conclusion Trump's victory was inexorably tied to Russian malfeasance.

In this gallery, we look at U.S. presidents in descending height order.

"I think it's significant that Trump does this badly," assistant director of the Quinnipiac University Poll Tim Malloy told Newsweek.

Billy Graham distanced himself from some of his son Franklin Graham's more Trumpian views.

Representative Adam Schiff condemned Trump's alleged attempt to get rid of the special counsel.

The co-founder of the nonprofit Bitch Media and author of three feminist texts has been analyzing the intersection of pop culture and feminism for decades.

John Dean said the current commander-in-chief is incompetent and dishonest.

In the impeachment proceedings of President Richard Nixon, a former senior aide's revelations were a key turning point.

In both the Russia probe and Watergate, key figures pleaded guilty to avoid huge prison sentences.

Filmmaker Peter Landesman goes "inside the heart and mind of the man" who changed history as the informant "Deepthroat."

James Quarles was an assistant special prosecutor focusing on campaign finance during the Nixon probe.

Who knows? Maybe one day history will repeat itself.

The president's disapproval number rose to 61 percent following his response to the protests in Charlottesville, Viriginia

The 1974 book tells the story of the Watergate scandal, and some readers are finding it newly relevant.

The president ate cottage cheese, got a haircut and talked to photos of past presidents.

According to a survey, 42 percent of Americans back Trump's impeachment, while 42 percent oppose it.

"Fate has ordained that the men who went to the moon to explore in peace will stay on the moon to rest in peace."

In June 1973, just 24 percent of people said they thought Richard Nixon should be impeached.