"We have to … let Mueller present these facts to the American people and then see where we go from there, because the administration must be held accountable," said Nadler, whose committee would direct the impeachment process. Fox News Sunday.
Mueller, former special adviser to the Department of Justice and former director of the FBI, will testify before Congress on July 24 after the House Democrats issued a summons to appear, and earlier this year, Muller completed a nearly two-year investigation into Russian interference The 2016 presidential election
Schiff said on CBS's "Face The Nation" that the report "contains pretty damned facts" and said, "Who could bring her to life better than the man who conducted the investigation himself?"
"We want people to hear it directly from him," Schiff said.
Muller said in a rare and notable public statement in May that his investigation could not free Trump from the obstruction of justice, and that the Is not an option against the President who could consider his office.
"If we had had the confidence that If the President clearly did not commit any crime, we would have said that, "said Müller. "However, we have not determined whether the president has committed a crime."
The investigation by the former Special Adviser, which also examined potential collusion, revealed that members of the Trump campaign knew they would benefit from Russia's illegal actions, but did not take any criminal action to help.
Mueller provided a roadmap on the conduct of the investigation and the possible role that Congress could play in holding Trump accountable. He emphasized that the "constitution requires a process other than" the criminal justice system to bring those responsible to justice, a clear signal that his investigation into Trump could be continued by the Congress.
More than 80 House Democrats have demanded an impeachment investigation against the President – the first step in a protracted process, but the House spokeswoman Nancy Pelosi and Nadler have resisted pressure to launch an investigation.
The impeachment clause in Article II of the US Constitution describes the process of dismissing a president who begins a vote in the House of Representatives. Violations that could lead to impeachment are treachery, bribery or other "serious crimes and offenses".