WASHINGTON (Reuters) - The chairman of the U.S. House of Representatives intelligence committee said on Tuesday he had seen no evidence to support President Donald Trump’s allegation he was wiretapped by then-President Barack Obama during the 2016 presidential campaign. 
 
 Republican Representative Devin Nunes said if Trump’s assertion were true, the leaders of Congress and chairmen of its two intelligence committees, known collectively as the “Gang of Eight,” should have been briefed. 
 
 “I have not seen that evidence,” Nunes told a news conference. “I think the bigger question that needs to be answered is whether or not Mr. Trump or any of his associates were in fact targeted by any of the intelligence agencies or law enforcement authorities.” 
 
 Trump made the accusation in tweets on Saturday, providing no evidence. An Obama spokesman denied it. 
 
 Trump has since pressed the House and Senate intelligence committees to expand probes into allegations that Russia meddled in the U.S. election to look into his charge. 
 
 “We are supposed to be kept up to speed on any pertinent counterintelligence investigation,” Nunes said. “If Trump or any other political campaign, or anybody associated with Trump, was under some type of investigation, that clearly should have risen to the Gang of Eight level.” 
 
 Adam Schiff, the top committee Democrat, also said it did not appear that the group had been appropriately briefed. 
 
 Schiff said it was “a scandal” that Trump had levied that accusation against Obama. He said the intelligence panel would address the issue and deal with it quickly. 
 
 Nunes said his committee planned public hearings as part of its Russia probe, beginning with one on March 20 at which Federal Bureau of Investigation Director James Comey and Admiral Mike Rogers, director of the National Security Agency, were called to testify. 
 
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 Former Director of National Intelligence James Clapper, former Central Intelligence Agency Director John Brennan and former acting Attorney General Sally Yates were also invited. 
 
 Nunes said the panel would not issue subpoenas for that hearing. “But if we have to, we will subpoena all information that is pertinent to this investigation if people either ... don’t want to appear or if the appropriate agencies do not provide the information we ask for.” 
 
 Schiff addressed speculation that the issue was too partisan for Congress to conduct a credible investigation. “To be honest, we don’t know yet. I can’t say for certain that will be possible,” he said at news briefing several hours after Nunes’. ||||| Story highlights The first public hearing in the House on Russia's meddling in US elections has been scheduled 
 
 Nunes told reporters there is no evidence yet of President Donald Trump being wiretapped 
 
 (CNN) The first public hearing in the House on Russia's meddling in US elections will be March 20, Intelligence Committee Chairman Devin Nunes said Monday. 
 
 Nunes said he has invited FBI Director James Comey and National Security Agency Director Mike Rogers, as well as former CIA Director John Brennan, former Director of National Intelligence James Clapper and former Attorney General Sally Yates, to testify. 
 
 In the Senate, Intelligence Committee Chairman Richard Burr responded for the first time publicly Tuesday since President Donald Trump's accused his predecessor then-President Barack Obama of wiretapping his phone last year, without presenting any evidence. The North Carolina Republican did not rule out including the wiretap accusation in his committee's investigation. 
 
 "We're going to go anywhere there is intelligence or facts that send us," Burr told CNN. "So I'm not going to limit it one way or the other. But we don't have anything today that would send us in that direction, but that's not to say that we might not find something." 
 
 Nunes also told reporters there is no evidence yet of President Donald Trump being wiretapped last year by then-President Barack Obama, but said the committee will look into it. 
 
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– The House is moving forward with an investigation into Russia's alleged attempts to tamper with the US election, scheduling the first public hearing on the matter for March 20, Intelligence Committee Chairman Devin Nunes announced. FBI Director James Comey, National Security Agency Director Mike Rogers, former CIA Director John Brennan, former Director of National Intelligence James Clapper, and former Attorney General Sally Yates have been invited to testify, CNN reports. Nunes also told reporters he has not seen any evidence to support President Trump's accusation that Obama wiretapped him, but that his panel will investigate the allegations, Reuters reports. On the Senate side, Intelligence Committee Chairman Richard Burr told CNN Tuesday that he was not ruling out the possibility his panel would also look into Trump's allegations. "We're going to go anywhere there is intelligence or facts that send us," he said. "So I'm not going to limit it one way or the other. But we don't have anything today that would send us in that direction, but that's not to say that we might not find something."