TEHRAN, Young Journalists Club (YJC) -"If the goods are there, you must impeach," Pelosi said to reporters on Wednesday at a breakfast sponsored by the Christian Science Monitor.
Pelosi's remarks were in response to a question on whether there was an alternative option of simply voting to censure the president.
The speaker said such an alternative was not under consideration.
She noted the importance of the Department of Justice's agreement to provide Congress with a less-redacted report by Special Counsel Robert Mueller, who investigated Russia's interference in the 2016 US presidential election and 10 instances in which Trump tried to interfere with Mueller’s investigation.
Pelosi's remarks came as former top Trump aide Hope Hicks appeared before the House Judiciary Committee in a closed session to answer questions about potential obstruction of justice by Trump and related matters.
Hicks was mentioned in Mueller's report multiple times. In saying Trump "must" be impeached if that is warranted by House investigations, it was not clear whether Pelosi was moving in that direction after months of talking about the divisiveness of impeachment.
At one point earlier this year she even said that Trump was "not worth" impeaching.
"If we're going to go down this path ... we have to make sure the public has an understanding of why," and senators understand their constitutional duty to hold Trump accountable for any wrongdoing, Pelosi said
Pelosi had said that she preferred to see Trump sent to prison rather than be impeached.
"I don't want to see him impeached, I want to see him in prison," Pelosi said at a meeting earlier this month.
US media outlet reported Pelosi as saying that she preferred to see Trump go to jail after losing the 2020 presidential election.
Democrats believe Trump is guilty of breaking the law by allegedly seeking to obstruct investigations into Russia's alleged meddling in the 2016 US election.
Trump is also accused of violating constitutional prohibitions on presidents receiving financial benefits from foreign governments, and also paying pre-election hush money to two women who claim to have had affairs with Trump.