Schiff said the investigation would "allow us to examine any credible claim that economic interests or other interests are driving decision-making by the president or someone in the administration."
"It is about any credible claims of leverage of the Russians or the Saudis or others," Schiff told reporters after House Intelligence Committees first meeting of the new congress.
Schiff said in the study that the study would include a continuing probe into Russia's actions in the 2016 election and contacts between Russia and Trump's team, as well as an investigation into "whether a foreign actor has sought to compromise or hold leverage, financially or otherwise. , about Donald Trump, his family, his business, or his fellow human beings. "
Schiff said the study, which could involve additional congressional committees, would also look at whether Trump or his collaborators "attempted to influence US government policy in view of foreign interests" and any potential obstacle in the various investigations.
Schiff's message is the most detailed look yet in how Congress Democrats will examine Trump's economy and possible ties to foreign entities, and how Democrats are sure to continue investigating Trump and his team well after special council Robert Mueller study had finished.
The committee also took its first action Wednesday in the new congress and voted to send more than 50 transcripts from its Russian study interviews with Mueller. The panel approved the power to send the transcripts by ballot, according to Republican rep. Mike Conaway from Texas.
Schiff has said that he wanted to send the transcripts to Mueller to review to see if any other witnesses to the committee committed chisel. Transcripts are likely to be transmitted before the end of the day, Schiff said.
In addition to the accusations against Stone, which he did not claim guilty last week, former Trump lawyer Michael Cohen pleaded guilty to lying to Congress in his 201
When the committee was controlled by the Republicans in the last congress, Schiff attempted to send the non-edited transcripts to Mueller, but the Republicans blocked his movement and argued that Mueller had not requested them.
The other interviews that will now be sent to the Special Advisors include Trump's oldest son Donald Trump Jr., son-in-law Jared Kushner and senior campaigns Corey Lewandowski, Steve Bannon and Hope Hicks. They also include several representatives of the Obama administration and others in Trump's circles interviewed under the committee's annual probe.
The committee already voted in November under former President Devin Nunes, a Republican in California, to make his interviewing tips publicly available. But they are currently being reviewed for classified material by the Office of Director of National Intelligence prior to a public release.
The Republicans in the committee, led by Nunes, made several proposals on Wednesday which were rejected by Democrats.
They immediately attempted to publish the committee's interviews performed in an unclassified setting, which includes most of the panel's Russian interviews. Nunes in a statement forged an "unacceptable delay" in the executive branch's declassification process.
And the Republicans tried to issue sub-quotes to a dozen officials, including former FBI director James Comey, according to Republican rep. Chris Stewart in Utah.  Schiff said the Democrats rejected the GOP proposals because there were personally identifiable and somewhat classified material contained in the unclassified transcripts, and the committee would not issue an acknowledgment until they offered to bring witnesses voluntarily.
Director's office National Intelligence estimated that the transcripts would be ready for public release in May or June, Schiff said, hoping to speed up this process by releasing some of the transcripts that were already clear first.
The Republican movements underlined the role – reversed for Schiff and Nunes in the democratically-congressional congress when it comes to the Russia inquiry: In the last congress, Schiff now made merous requests for summons and committee actions rejected by the Republican majority.
When he left the committee's secure room, Nunes was asked if he voted to release the transcripts to Mueller. "You're an embarrassment to yourself," replied Nunes.
This story has been updated with further development Wednesday.