House Minority Leader Nancy Pelosi offered a harsh comparison of President Trump's jarring adjustment to the White House to someone being asked to perform brain surgery who has no clue what to do.

The California Democrat explained that there has been an evolution in Trump since he moved into 1600 Pennsylvania Avenue.

"At first, there was a thread of being an impostor that may have been in his mind,” Pelosi said, according to the New York Times.

Trump has "overcome" that mindset nearly a year into his presidency, she added, but alluded to a more troubling matter.

“The bigger problem, the thing people need to understand, is that he was utterly unprepared for this," Pelosi said. "It would be like you or me going into a room and being asked to perform brain surgery. When you have a lack of knowledge as great as his, it can be bewildering."

The same report from the Times quoted Sen. Lindsey Graham, R-S.C., offering a more forgiving take on Trump.

“You can expect every president to change because the job requires you to change,” Graham. “He’s learning the rhythm of the town.”

Trump's presidency is "a work in progress," Graham conceded.