Schiff said Republicans' use of an obscure rule to pass the memo to Trump would increase the risk of a constitutional crisis.
President Donald Trump was overheard Tuesday telling a Republican lawmaker he is "100 percent" in favor of releasing a classified memo on the Russia investigation.
The politicians urged the CEOs of Twitter and Facebook to conduct their own examination and submit their findings to Congress.
A website claiming to track Russian influence in real time showed that Russia-linked Twitter accounts helped #ReleaseTheMemo go viral.
President Donald Trump's former chief strategist Steve Bannon declined to comply with a subpoena ordering him to answer questions from a U.S. House intelligence panel.
Wray and Rosenstein were seen leaving Hart Senate Office Building from what appeared to be the Senate Intel Committee.
A series of tweets by U.S. President Donald Trump about the investigation into contacts between his 2016 campaign and Russia prompted concerns on Sunday among both Democratic and Republican lawmakers.