"There's no evidence of collusion", he said.
The Federal Bureau of Investigation is also probing Russian interference in the election. Tom Cotton of Arkansas, another GOP member of the committee, said he has seen no evidence to back Trump's wiretapping claim.
Monday's hearing was also expected to address a second explosive issue: Trump's unsubstantiated accusations that the Obama administration wiretapped his phone at Trump Tower in NY during the campaign.
"We have to understand everything about the ties between Russian Federation, the Trump campaign, the Trump transition, the Trump administration", said Kaine, a member of the Foreign Relations Committee and Democratic presidential candidate Hillary Clinton's running mate.
But it has also evolved into a political distraction at a time when Trump is facing fights over Obamacare repeal and the budget that will help define his first 100 days in office.
Trump has been dogged by allegations that his associates had ties to Russian officials.
But the effort stumbled as every key congressional figure associated with intelligence oversight said there was no evidence of wiretapping. "There was no FISA warrant that I'm aware of to tap Trump Tower".
Trump's tweets are not just causing a political kerfuffle; they've sparked global diplomatic fallout.
If the White House has any, he added on CNN, "Please share it with us".
White House spokesman Sean Spicer even suggested this week that Trump may have been under surveillance as part of information that was incidentally collected during an investigation focused elsewhere.
Nunes said if Trump's tweets were taken literally, then "clearly the president was wrong".
New drug cuts cholesterol significantly
More than 80 percent had suffered heart attacks , and some had histories of stroke and peripheral artery disease. But with a high price tag, it remains to be seen who will be able to afford the drug.
Some observers believe Trump is eroding credibility that he will need to rally Americans in a moment of national crisis. The British government objected and the Trump administration pledged not to use the claim again. "And the wrecking ball it has created has just banged into our British allies and our German allies and it's continuing to grow in terms of damage and he needs to put an end to this". That, in my opinion, is no way to run a business.
Four Republican governors penned a letter expressing concern about the American Health Care Act, saying it didn't provide enough flexibility or resources on Medicaid and meet the promises from Trump. So I think it will be good to highlight that.
"If he didn't do it, (Trump) shouldn't be reckless in accusations that he did".
Top officials from both parties have discredited Trump's wiretapping allegation.
He said that at this point, the only crime for which there has been clear evidence is the leaking of classified information - namely, Flynn's name - and the Intelligence Committee will continue to investigate that.
Several congressional panels have launched investigations into Russia's alleged interference, including House and Senate intelligence committees, which have jurisdiction over the nation's 17 intelligence agencies, and the House and Senate judiciary committees.
"I do not think so anymore".
On CNN's "State of the Union", Sen.
FBI Director James Comey and National Security Agency Director Mike Rogers are set to testify Monday on Capitol Hill.
U.S. intelligence agencies in January took the extraordinary step of stating publicly that they had concluded that hackers working for Russian Federation broke into the email accounts of senior Democrats and released embarrassing ones with the aim of helping Trump defeat Hillary Clinton.
CNN reported in February that there was constant contact between Trump campaign aides and Russians known to U.S. intelligence last summer, citing multiple current and former intelligence, law enforcement and administration officials.