Trump canceled a planned press conference after world leaders were filmed joking together at the NATO summit, apparently about the president, although his name was not mentioned.
Navarro told CNN that the chanting was "democracy in action."
The president is facing impeachment by the House over the Ukraine-Biden affair and some GOP senators are speaking out.
The pair discussed whether the Democrats and Republicans had reacted to the inquiries into their presidents in the same way.
President Donald Trump's volatile White House is going to get worse, former communications director Anthony Scaramucci told CNN's Don Lemon.
Bob Kuylen told CNN's Don Lemon that the trade war has already cost him $400,000.
A CNN spokesperson said Lemon "categorically denies" the allegations.
The Chyron switched from "POTUS Meets With African American Faith Leaders In The Wake Of His Attacks Against Leaders Of Color" to "Controversial African American Pastor Meets With President."
The president prompted outrage when he attacked Rep. Elijah Cummings and described his Baltimore district as "disgusting" and "rat-infested."
CNN host Don Lemon told a journalism conference in New York City about threats to his personal safety and that he is not sure how long he can stay on air.
Republican CNN guest Rick Wilson misquoted a line from HBO's "The Wire," in which he warned Nancy Pelosi to go all-in on impeachment if she chooses to, because "if you're going to go after the king, you best get him."
"I don't think he likes it when women aren't taking care of him," author Michael D'Antonio said.
"How do you go bad on people who've carried you like a newborn for months?" a bemused Cuomo asked.
Michael D'Antonio, a CNN contributor who wrote the book "The Truth About Trump," offered his insights into the president's background in evading procedure and protocol.
"Prime Time" host makes joke about claims Trump's businesses lost more than $1 billion between 1985 and 1994.
Trump's seminal memoir and business-advice book was publish in the midst of huge losses for his businesses.
"It is incredible the actions he took. He absolutely needs to go," the California congressman said.
Trump has "the worst poker face in the history of modern American politics," Scarborough said.
The couple has been together for more than two years.
"Can we have a sense of humor about some things?" Lemon asked.
CNN's Don Lemon asked "Empire" actor Jussie Smollett's lawyer Patricia Brown Holmes about suspicions of political interference in the case after all charges against her client were dropped.
"She never answers a question. She berates you. She is condescending," CNN's Don Lemon said.
Scandals such as the alleged college admissions cheating scheme work in the president's favor despite his hypocrisy, Lemon suggested.
"The legacy of Donald Trump and the future of Donald Trump is one and the same. He is racist," Kierna Mayo.
Chicago Mayor Rahm Emanuel defended his city in an interview with CNN's Don Lemon after "Empire" actor Jussie Smollett was accused of hoaxing a violent hate crime.
Lemon said the actor's apparent assault hoax will be used by Trump and his allies to push their conservative agenda.
"What's going on is gaslighting," Tara Setmayer said
"Looks like he's having a whole lot of 'executive time,'" Don Lemon said about the president, whose schedule has been noticeably light this week.
"This is a man who thinks that he cannot win a straight-up competition," explained Michael D'Antonio.