Pressure continues to mount for former national security adviser Michael Flynn to testify before Congress about possible connections between the Trump campaign and Russia, CBS News correspondent Errol Barnett reports.
Mr Trump, a Republican, tweeted on Friday: "Mike Flynn should ask for immunity in that this is a witch hunt (excuse for big election loss), by media & Dems, of historic proportion!"
Schiff and an aide went to the White House on Friday at the administration's invitation to review documents that it said support Trump's contention he and his team were subjected to surveillance by the Obama administration during the presidential campaign.
"While I can not discuss the content of the documents", Schiff said, "if the White House had any concern over these materials, they should have been shared with the full (House and Senate intelligence) committees in the first place as a part of our ordinary oversight responsibilities".
They hope that the general public, inundated with propaganda intimating that Russian Federation "hacked the election" so Trump wasn't really elected, will assume that misdeed during the brief presidency are what Flynn wants immunity for.
Russian Federation has denied allegations that it hacked emails of Democratic groups and released information to tip the presidential election toward Mr Trump.
The president weighed in the day after Flynn's attorney confirmed the immunity discussions with intelligence committees in both the Senate and House that are investigating Russia's meddling in the 2016 presidential election.
"The fact that Flynn and his lawyer have made his offer publicly suggests that he has nothing good to give the prosecutors". "The discussions did not include immunity or other possible conditions for his appearance".
"The easiest way to not incriminate yourself is to keep your mouth shut", said Washington lawyer Stephen Ryan, a congressional investigations expert.
His downfall came when it was reported that the Justice Department warned the Trump administration about Flynn's communications with Russian Ambassador to the United States Sergey I. Kislyak. And the top Democrat on the House Intelligence Committee said it was premature to make a decision on immunity.
Critics assailed the president over his tweet, noting that during last year's campaign, Trump said in a speech that "If you're not guilty of a crime, what do you need immunity for?"
Spicer said he wasn't going to offer Flynn advice on asking for immunity from the podium, but said Flynn should take every "precaution" in order to get his story out.
An immunity deal would make it extraordinarily hard for the Justice Department to prosecute Flynn, said the daily.Asked about Flynn's offer, Dmitry Peskov, a Kremlin spokesman, said the Russian government has not given it "any evaluations".
The House intelligence committee "had a preliminary conversation with Michael Flynn's lawyer about arranging for Flynn to speak to the committee", Nunes spokesman Jack Langer said.
Schiff, who has called for Nunes' recusal from the investigation because of his close ties to the White House, said the committee is interested in Flynn's testimony but is also "mindful" of the Justice Department's interests.
That was a stumbling block in the 1980s-era prosecutions of Iran-Contra affair figures Oliver North and John Poindexter, whose convictions were set aside following concerns from judges that witnesses in their criminal cases had been unduly affected by their congressional testimony.
"Flynn probably thought, 'If I can get immunity first, then I can go up and say nothing, ' " Nance said. The Senate intelligence committee has decided not to accept his offer to testify at this time, according to a person familiar with the matter.
Testimony from Mr Flynn could help shed light on the conversations he had previous year with Sergei Kislyak, Russian ambassador to the United States, while national security adviser for Trump's presidential campaign.
He and his firm also recently registered with the Justice Department as foreign agents for lobbying work conducted on behalf of a company owned by a Turkish businessman.