Senator John McCain has said that President Trump should provide proof that former President Obama wiretapped his phones or he should retract the claim, reports The Hill.

During an appearance on CNN's "State of the Union" Sunday, McCain said:

"President Trump has to provide the American people—not just the intelligence committee, but the American people—with evidence that his predecessor, former president of the Unites States was guilty of breaking the law. Because our Director of National Intelligence, General Clapper, testified that there was absolutely no truth to that allegation."

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McCain added, "I think the president has one of two choices: Either retract or to provide the information that the American people deserve because if his predecessor violated the law -President Obama violated the law-we've got a serious issue here, to say the least."

He then suggested that Trump ask the top intelligence officials about the matter because, according to McCain, "...they certainly should know whether the former president of the United States was wiretapping Trump Tower."

The discussion was prompted by a series of controversial tweets Trump posted on March 4, the first of which read, "Terrible! Just found out that Obama had my 'wires tapped' in Trump Tower just before the victory. Nothing found. This is McCarthyism!"

See the original tweets:



4 PHOTOS President Trump accuses Obama on Twitter of wiretapping him See Gallery President Trump accuses Obama on Twitter of wiretapping him Terrible! Just found out that Obama had my "wires tapped" in Trump Tower just before the victory. Nothing found. This is McCarthyism! Is it legal for a sitting President to be "wire tapping" a race for president prior to an election? Turned down by court earlier. A NEW LOW! I'd bet a good lawyer could make a great case out of the fact that President Obama was tapping my phones in October, just prior to Election! How low has President Obama gone to tapp my phones during the very sacred election process. This is Nixon/Watergate. Bad (or sick) guy! Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

However, according to ABC News, "Trump offered no proof for his claims."

Obama has denied any such activity, with his spokesman Kevin Lewis saying in a statement, "...neither President Obama nor any White House official ever ordered surveillance on any U.S. citizen. Any suggestion otherwise is simply false."

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11 PHOTOS Barack Obama and Donald Trump meet See Gallery Barack Obama and Donald Trump meet U.S. President Barack Obama meets with President-elect Donald Trump (L) in the Oval Office of the White House in Washington November 10, 2016.REUTERS/Kevin Lamarque U.S. President Barack Obama (R) meets with President-elect Donald Trump to discuss transition plans in the White House Oval Office in Washington, U.S., November 10, 2016. REUTERS/Kevin Lamarque U.S. President Barack Obama meets with President-elect Donald Trump (L) in the Oval Office of the White House in Washington November 10, 2016.REUTERS/Kevin Lamarque U.S. President Barack Obama (R) meets with President-elect Donald Trump to discuss transition plans in the White House Oval Office in Washington, U.S., November 10, 2016. REUTERS/Kevin Lamarque U.S. President Barack Obama meets with President-elect Donald Trump (L) in the Oval Office of the White House in Washington November 10, 2016.REUTERS/Kevin Lamarque U.S. President Barack Obama meets with President-elect Donald Trump to discuss transition plans in the White House Oval Office in Washington, U.S., November 10, 2016. REUTERS/Kevin Lamarque U.S. President Barack Obama (R) greets President-elect Donald Trump in the White House Oval Office in Washington, U.S., November 10, 2016. REUTERS/Kevin Lamarque U.S. President Barack Obama meets with President-elect Donald Trump (L) to discuss transition plans in the White House Oval Office in Washington, U.S., November 10, 2016. REUTERS/Kevin Lamarque U.S. President Barack Obama shakes hands with President-elect Donald Trump (L) to discuss transition plans in the White House Oval Office in Washington, U.S., November 10, 2016. REUTERS/Kevin Lamarque TPX IMAGES OF THE DAY U.S. President Barack Obama (R) greets President-elect Donald Trump in the White House Oval Office in Washington, U.S., November 10, 2016. REUTERS/Kevin Lamarque U.S. President Barack Obama shakes hands with President-elect Donald Trump (L) to discuss transition plans in the White House Oval Office in Washington, U.S., November 10, 2016. REUTERS/Kevin Lamarque Up Next See Gallery Discover More Like This HIDE CAPTION SHOW CAPTION of SEE ALL BACK TO SLIDE

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