Schiff has indicated that he will re-open parts of the committee probe, which Republicans closed last March, concluding there was no evidence of conspiracy or collusion between Russian Federation and Trump's presidential campaign. Republicans ended that probe in March, concluding there was no evidence of conspiracy or collusion between Russian Federation and Trump's presidential campaign.
Trump's former fixer and personal lawyer, Michael Cohen, and a longtime adviser, Roger Stone, have been charged with lying to the panel.
Schiff also told reporters Wednesday that the House Intelligence Committee will not be "intimidated or threatened" by Trump's comments.
"Our job involves making sure that the policy of the United States is being driven by the national interest - not by any financial entanglement, financial leverage or other form of compromise", he said told reporters on Wednesday.
They criticized the Office of the Director of National Intelligence declassification review of documents already approved for release in the last Congress as "unacceptable", and added that "we hope the Democrats will now join us in further increasing transparency by voting to immediately publish all the unclassified transcripts that we previously sent to the executive branch".
Since he testified in 2017, Cohen has turned on the president, cooperating with Mueller's probe and a separate investigation in NY. The investigation, Schiff said, would also explore whether Trump or his associates have "sought to influence US government policy in service of foreign interests" and any potential obstruction into the various investigations.
Google earnings today: Despite earnings beat, Alphabet shares slip on higher spending
Facebook Inc. showed that last week by reporting a 30 percent jump in fourth-quarter revenue from a year earlier. Google advertising revenues were $32.63 billion in the fourth quarter , 83% of the total for Alphabet.
Cohen is due back in front of the House committee on Friday for a closed-door testimony, his first time answering questions in front of a Democrat-controlled panel, as part of an agreement to cooperate with Mueller's investigation.
Stone is accused of lying to Congress about the 2016 campaign's efforts to use stolen emails to undercut Trump's Democratic rival, Hillary Clinton.
Cohen, who is set to go to prison on March 6 after pleading guilty to crimes including campaign finance violations during Trump's 2016 presidential campaign, was scheduled to appear before the panel for closed testimony on Thursday. Stone is also charged with obstructing the House probe by encouraging one of his associates, NY radio host Randy Credico, to refuse to testify before the House panel in an effort to hide Stone's false statements.
Democrats have long questioned whether some witnesses lied to lawmakers during those interviews, and they plan to make obstruction of justice another focus of their planned probe.
Mueller requested Stone's interview transcript past year and the panel voted to release it in December.
Mueller requested Stone's interview transcript previous year and the panel voted to release it in December, ahead of the January charges. There are dozens of other transcripts of interviews with former Obama administration officials and Trump associates. Republicans who led the committee in the last Congress blocked Democrats' attempt to do so last September.