Alec Baldwin sharply criticized President Trump on Tuesday night at an event promoting his new book, saying that he had expected Trump to "change" after becoming president.

"We can't be mean enough to this guy," Baldwin said at Georgetown University. "I really expected him to change."

Baldwin, who won an Emmy this year for his portrayal of Trump, said that the president has access to the "best and brightest" in America, something that he had hoped Trump would realize was a "tremendous opportunity."

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"You see real human suffering and people who are trying to heal that suffering. You come home and you meet the creme de la creme of the arts, letters, academia, politics, all you do is shake hands and go to dinners and have photo-ops with the greatest Americans alive or the neediest Americans alive," Baldwin explained.

"And I thought to myself, my God, he would finally come to his senses and say what a tremendous opportunity this is for me as a human being," he added, before saying: "Forget about it."

The former "30 Rock" star returned to NBC last year to play Trump in guest appearances on "Saturday Night Live," something that Baldwin said he never expected would work.

"I think I spit my drink out at him," Baldwin said of his reaction to producer Lorne Michaels's invitation. "Trump? That's the most asinine thing I've ever heard."

Baldwin said he expected the character would end after about three episodes with Trump's expected defeat to Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE during the 2016 election, but was thwarted by the president's surprise victory.

"And it would be over," Baldwin said. "And then, of course, it wasn't over."