President Trump used two events at the White House with the president of Finland on Wednesday to challenge Democrats as they pressed ahead with their investigation into whether Mr. Trump had abused the power of his office in seeking political dirt from Ukraine.

Here’s a fact check of his remarks.

What President Trump Said

“And then Schiff went up and he got, as the chairman of the committee, he got up and related a call that didn’t take place. He made up the language. Hard to believe. Nobody has ever seen this. I think he had some kind of a mental breakdown. But he went up to the microphone and he read a statement from the president of the United States as if I were on the call, because what happened is when he looked at the sheet — which was an exact transcript of my call, done by very talented people that do this — exact, word for word, he said, ‘Wow, he didn’t do anything wrong.’ So he made it up. He went up to a microphone, and in front of the American people and in Congress, he went out and he gave a whole presentation of words that the president of the United States never said.”

False.

For days, Mr. Trump has criticized statements made by Representative Adam B. Schiff, Democrat of California, during a congressional hearing last week about the July 25 phone call between Mr. Trump and President Volodymyr Zelensky of Ukraine. That call is part of a whistle-blower complaint that led Democrats to begin an impeachment inquiry.

The president, who often misquotes others, has repeatedly accused Mr. Schiff of “treason” and committing a “crime” for the way he presented the call. He escalated those attacks by claiming, without evidence, that Mr. Schiff had decided to fabricate the conversation after realizing that Mr. Trump “didn’t do anything wrong.”

Mr. Schiff did not claim to be reciting from a reconstructed transcript of the call and said he was conferring “the essence” of the conversation. But he did speak in first person, leaving an impression that he was quoting Mr. Trump. Later in the hearing, Mr. Schiff said that his “summary of the president’s call was meant to be at least part in parody.”