Nadler says he will call McGahn

House Judiciary Chairman Jerry Nadler on Sunday said White House counsel Don McGahn to testify.

"We have to hear from other people like Don McGahn, who we're going to call," the New York Democrat said on NBC's "Meet the Press."

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McGahn's testimony in the recently released Mueller report has been at the heart of the controversy over possible obstruction of justice by President Donald Trump. In his testimony, McGahn spoke to Robert Mueller.

Addressing that testimony, Nadler said Attorney General William Barr deceived the American people about presidential misconduct.

"The key is clearly obstructed by the American people on the obstruction of justice, where there was plenty of evidence that was obstructed in the report," Nadler told host Chuck Todd.

Nadler also said he had no doubt the Mueller report, which was released Thursday, was more damning than Trump's supporters wished to admit.

"The special prosecutor found Mueller found … that there was plenty of evidence that the Russians intervened in the Trump election to help," Nadler said.

"There was plenty of evidence that the Trump campaign was about, you know, and wanted it, in fact, about some of the information provided by the Russians, in advance. What he could not prove, was that there was – beyond a reasonable doubt, there was a criminal conspiracy. "

On Friday, Nadler issued a subpoena to the Justice Department for the full, unredacted Mueller report and all the underlying evidence.