House Judiciary Committee Chairman Rep. Jerry Nadler (D-NY) speaks to members of the media at Rayburn House Office Building on Capitol Hill on June 26, 2019 in Washington, DC. Alex Wong/Getty Images

Members of the House Judiciary and Intelligence committees are preparing to grill former special counsel Robert Mueller about his report and investigation.

Here's what they've said about the hearings so far:

House Judiciary Chairman Jerry Nadler: On Sunday, he said Mueller's report presents "very substantial evidence" that President Trump is "guilty of high crimes and misdemeanors" — an impeachable offense. Nadler told CNN that by having Mueller testify before the committee, the panel's "goal is to break the lies of the President and the attorney general in saying that the report found no collusion, found that there was no collusion, that there was no obstruction and exonerated the President."

House Intelligence Committee Chairman Adam Schiff: He said Sunday that most Americans haven't read the dense 448-page Mueller report. Schiff said on CBS "Face The Nation" that the report contains "a pretty damning set of facts," and said, "Who better to bring them to life than the man who did the investigation himself."

Georgia Rep. Doug Collins: Collins, the top Republican on the Judiciary Committee, said his members are prepared to address the topics they want to cover, but he argued the pressure was on the Democrats to deliver this week. "At this point I think the expectations are entirely on the Democrats. The hype is on the Democrats to find out something new out of a well-read report that again, at the end of the day, Mr. Mueller has done all he's going to do," he said.

California Rep. Devin Nunes: Nunes, the top Republican on the Intelligence Committee, has not commented to CNN and others about the Mueller report. But he told Fox News' Sean Hannity this week that he would try to prevent Mueller from trying to "embellish."