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The House Intelligence Committee is holding a rare public hearing on Monday, with FBI Director James Comey and NSA chief Adm. Mike Rogers expected to face questions about Russia's involvement in the U.S. election, any ties between Russia and President Trump's campaign, who leaked information to the media about Trump aides' communications with Russia, and whether there is any evidence to back up Trump's claim that former President Barack Obama had his Trump Tower phones wiretapped. Comey is expected to say there is no evidence Trump's phones were tapped, but nobody is sure what other questions he will answer. Rogers is predicted to say less than Comey.

Democrats are most eager to discuss any Russian role in the election and any connections between Trump and the Kremlin, while Republicans are focused on who has been disclosing potentially classified information about Trump team members. Comey briefed lawmakers on Friday about the state of the Russian investigation and Trump's wiretapping accusations (he said no about Trump and wiretapping, and "it was a categorical denial," a U.S. official tells The Washington Post). What he told House Intelligence Committee members about Trump and Russia is apparently still up for debate.

On Fox New Sunday, committee Chairman Devin Nunes (R-Calif.) said he has seen "no evidence of collusion" between Trump's circles and Russia to sway the election his way. But on NBC's Meet the Press, ranking Democrat Adam Schiff (Calif.) said there is already "circumstantial evidence of collusion" and "direct evidence" of "deception" by the Trump campaign, and "there is certainly enough for us to conduct an investigation."

Regarding Trump's wiretapping allegations, "I hope that we can put an end to this wild goose chase, because what the president said was just patently false," Schiff said. "It's continuing to grow in terms of damage, and he needs to put an end to this."