Separately, Nadler said he's not letting up on demanding answers from former Trump aide Hope Hicks on her "inconsistent" previous testimony on hush payments to Stormy Daniels and Karen McDougal, who claimed to have affairs with Trump.
The stakes are high with the next presidential election 16 months away.
"We want the people to hear it directly from him", Schiff said.
But the former Federal Bureau of Investigation director's deep reticence to become embroiled in politics, and Republican plans to turn the hearings into a reality TV-like partisan brawl, threaten to leave Americans no less confused than when Mueller's dense, 448-page report was released in April.
"Remember, the Mueller report is a one-sided report".
The nation, though, will likely pay attention.
Since the report was released, Democrats have clung to the 10 instances outline by Mueller of potential obstruction of justice throughout the probe.
Mueller spoke publicly only once, saying his team's report, released in April, should speak for itself. "[The report] found a great deal of collusion, it found a great deal of obstruction of justice by the president and it pointedly refused to exonerate the president".
Mr. Schiff said that doesn't disprove his argument, however, because the Department of Justice is bound by their policy that prohibits indicting a sitting president. The former special counsel will also appear before the House Intelligence Committee.
But time has a way of changing the political dynamic.
Mueller has said he chose the words in his report very carefully and would not provide any other information in any public testimony.
Borussia Dortmund winger Sancho: Liverpool right club for Brewster
A Rhian Brewster penalty in the 75th minute after Ben Woodburn was brought down cut Dortmund's lead to a single goal . Bruun-Larsen made it 3-1 to Dortmund shortly after and then it was time for Liverpool's extensive substitutions.
Trump says ready to help resolve SKorea-Japan dispute
The agreement is renewed each year and the South Korean government is required to notify Japan by August 24 to renew it this year. President Donald Trump said that he might go between South Korea and Japan concerning their disputes, if both wish.
Vice President Mike Pence marks Apollo 11 anniversary at launch site
As he took his first step, Armstrong famously said, "That's one small step for man, one giant leap for mankind". Clocks all over counted down to the exact moment of the Eagle's landing on the moon - 4:17 p.m.
Trump, a master at changing the subject, has easily shifted the public's attention to his racist attacks on four women of color in Congress.
Nadler said he's not anxious that Republicans might seek to attack the credibility of the Russian Federation investigation and says he hopes to take cues from the public after the hearing about "where we go from here".
Mueller isn't going to say anything new.
"The president and the attorney general have lied to the American people about what was in the Mueller report, about the fact that you just heard the president say they found no collusion, no obstruction. People don't read a 448 page report".
Democrats are counting on Mueller's presence to capture public attention in ways the report alone has been unable to do, with some comparing it to the movie version of the book.
Mueller is scheduled to testify back-to-back in front of the House Judiciary and Intelligence Committees.
House Judiciary Committee Chairman Jerry Nadler said Sunday that the Mueller report includes evidence that President Donald Trump is "guilty of high crimes and misdemeanors". He said Trump and Barr have left a "fog of propaganda" hanging over the country.
"The point is clear: there is a pattern going back decades, and with so many examples, it's kind of easy to forget some of them", Stelter said. Democrats often note that obstruction was included in the articles of impeachment against President Richard Nixon. Trump's campaign denies that.
But Nadler said Sunday he does not expect Mueller's appearance to be what he called a "dud".
That could lead to an unfulfilling conclusion for Democrats, and others, who are hoping Mueller's testimony will bring some resolution.
"Frankly, the American people have moved on", Collins said.