“I think in the opening couple days, he’s going to repeal 60 to 70 percent of Obama’s legacy by simply vetoing out all of the various executive orders that Obama used because he couldn’t get anything through Congress,” Mr. Gingrich said on Sunday, The Washington Times reported.

Shortly after the election, Mr. Obama advised Mr. Trump to enact his agenda via Congress, saying that “going through the legislative process is always better because in part it’s harder to undo.”

That’s a lesson Mr. Obama may learn the hard way, Mr. Gingrich said.

“I think President Obama is beginning to figure out that his legacy is like one of those dolls that as the air comes out of it, it shrinks and shrinks and shrinks,” Gingrich said.