Former House Speaker Newt Gingrich (R-Ga.) had some words of caution for President Trump today, saying the president is "isolated."

Gingrich said on "America's Newsroom" that Trump must take an in-depth look at his position and analyze why his approval rating is around a dismal 35 percent. 

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"He is much more isolated than he realizes. On the Hill, he has far more people willing to sit to one side and not help him right now," said Gingrich. 

The former speaker noted recent examples of Republicans criticizing the president, including Mitt Romney and Sen. Bob Corker (R-Tenn.), chairman of the Foreign Relations Committee. 

Corker said Thursday he has doubts about Trump's "stability" and "competence" following his Charlottesville response. Romney said today Trump must apologize to the country for how he responded.

Gingrich said Trump cannot look at the criticism from his own party and his approval ratings and conclude "everything is fine." 

"If he wants his agenda enacted and to get things done and have a presidency that's stable, he's gonna have to have a couple of serious changes," he told Bill Hemmer.

Gingrich again suggested the president take some time to reflect and read his own 1997 book, "The Art of the Comeback."

UPDATE: Steve Bannon, chief strategist to President Trump, is expected to leave the White House, a source tells Fox News.

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