Cohen is not expected to answer questions on any of the issues surrounding this investigation when he appears before the House Oversight Committee next month, as the trial of Special Envoy Robert Müller is currently underway. He consulted with the Special Adviser before agreeing to appear at the hearing, CNN told two sources.
This does not mean that Cohen's testimony will not contain dramatic revelations.
Cohen is prepared to discuss issues related to silence payments and aspects of the Trump organization, including the roles of the President and his children, according to a source familiar with the matter.
Cohen is ready to explain, on request, the role of then-candidate Trump when asked, "Women who said they had ties to Trump and how his choice played a role," the source said. Trump has denied matters with the women. Cohen could also talk about how he considers his detention for tax evasion to be unfair, the source said.
Cohen's statement has raised questions about what he can say publicly, as the Mueller investigation continues.
Elijah Cummings, chairman of House Oversight, said his staff had consulted with Müller about Cohen's appearance and will do so before his hearing on February 7.
"We will not hamper Müller's investigation," said the Democrat of Maryland Friday. "These discussions (with the special adviser) can well last until the day before … because Müller is continuous."
Cohen will appear before Congress next month after he He was convicted in December of multiple charges and sentenced to three years in prison. Cohen pleaded guilty to the campaign to fund crimes, including payments made during the campaign to silence those women who refer to matters – crimes prosecutors allege that Trump condemned Cohen to condemnation. Trump has denied that he had instructed Cohen to make the payments.
Cohen also pleaded guilty to having lied to Congress about how long the planned Trump Tower Moscow project discussions reached into the 2016 campaign when he testified in 2017 before Congressional intelligence committees.  It is not yet clear which topics may be banned. For example, Cummings declined to say whether Cohen should speak about Trump Tower Moscow.
Asked whether silent pay payments would be part of the hearing, Cummings said his committee was "in search of the truth" [src-mini="//cdncnncom/cnnnext/dam"19659008Analysis:UnredactedPaulManafortsAdvertisement"/assets/181206195520-01-paul-manafort-file-1206-restricted-small-169jpg"src-xsmall="//cdncnncom/cnnnext/dam/assets/181206195520-01-paul-manafort-file-1206-restricted-medium-plus-169jpg"src-small="http://cdncnncom/cnnnext/dam/assets/181206195520-01-paul-manafort-file-1206-restricted-large-169jpg"src-medium="//cdncnncom/cnnnext/dam/assets/181206195520-01-paul-manafort-file-1206-restricted-exlarge-169jpg"src-large="//cdncnncom/cnnnext/dam/assets/181206195520-01-paul-manafort-file-1206-restricted-super-169jpg"src-full16x9="//cdncnncom/cnnnext/dam/assets/181206195520-01-paul-manafort-file-1206-restricted-full-169jpg"src-mini1x1="//cdncnncom/cnnnext/dam/assets/181206195520-01-paul-manafort-file-1206-restricted-small-11jpg"data-demand-load="not-loaded"data-eq-pts="mini:0xsmall:221small:308medium:461large:781"/>
"The American people will have the opportunity to hear from him, Mr. Cohen," Cummings said. "And their representatives, republican and democratic representatives, will have an opportunity to ask questions, and I think the American people would realize that it was important, their voices were important and we opened it to transparency . "
A member of the Democrats warned Democrats not to give Republicans what they want – to turn the hearing into a "circus" by asking confidential questions about Trump's alleged affairs.
Cohen's testimony before the board is public, so he will not speak about the investigation in Russia, but he could hold these talks with Congress in front of closed doors in front of other bodies. Both the United States Senate and the Senate Senate are trying to bring Cohen back before he goes to jail in March.
"To my understanding, he does not intend to address Russia's investigation in his open testimonial, he will have to do it, answer any questions, and we will be in contact with the lawyer," said Adam Schiff of California, House Intelligence Chairman, on Thursday to CNN. "We hope he volunteers to testify before the Intel committee in closed session."
According to a source familiar with the matter, Cohen has not yet committed to testify before one of the intelligence committees.
Even If Mueller does not want Cohen to answer questions that touch the investigation in Russia, that does not mean they will not be asked at his public hearing. Ohio MP Jim Jordan, the supreme Republican on the oversight committee, did not rule out asking Cohen for questions on a topic.
"It seems when he comes to me, we should be able to ask him what we want to ask him about," said Jordan Friday.
On Friday, Jordan sent a letter to Cummings in which he asked Republican employees to include Cohen's lawyers and Müller's team on Cohen's testimony. Jordan also asks Cummings to collect a series of records from the Department of Justice and the FBI about Cohen, including records of her Cohen interviews, investigative reports, and cooperation agreements.
"I hope you will work with me and the minority members avoid an unproductive and chaotic ear," wrote Jordan. "If you want to provide a platform for this convicted felon and condemned, we need to make sure we have the information to interview him."
Jordan was often frustrated when Republicans investigated the conduct of the FBI and the Justice Department in 2016
"I tried to ask all sorts of questions in each of these allegations, and I already had 15 lawyers." Sitting there and telling the witness that they could not answer the question, "he said
" For a year and a half (the Democrats) we said we do not want to do anything to disrupt Müller's investigation, but we & # 39; They will teach their star witness before the Mueller investigation is completed.
Rep. Mark Meadows of North Carolina, chairman of House Freedom Caucus and a close GOP ally of Trump on the board, indicated that Cohen should be expected by the Republican interrogators.
"I find it strange The witness is a convicted offender who comes to jail for lied to the congress, "Meadows said.
Cohen could use his testimony as a testimony to demand a lesser punishment, even though there is no He is expected to face a three-year prison sentence on March 6.