Senator John McCain said Sunday that President Donald trump needs to either cancel or to justify his assertion that President Barack Obama tapped the phones in his campaign office in Trump Tower.

McCain said he has "no reason" to believe the statement trump that the President is not supported by any evidence and which, according to the White house, was caused by an article of Breitbart. "I have no reason to believe that the accusation is true, but I also believe that the President of the United States could solve this problem in a minute," said McCain. "All he needs to do is pick up the phone to call the Director of the CIA, the Director of national intelligence and say," Okay, what happened? "

Comments of the Senator from Arizona, marks the latest Clarion call to the President to explain the series of tweets that he sent on March 4 in which he claimed, without evidence, that Obama "held a wiretap" to the trump Tower.

As trump put forward the staggering allegations of several current and former employees of national security, rejected the allegation, including the former Director of National intelligence James Clapper, and Obama himself through his representative. Sources told CNN that the FBI Director James Kaidi also renounced claims trump.

According to the Law on the supervision of foreign intelligence, law enforcement must obtain a warrant from a secret court to conduct such monitoring. But Americans can be seen in the monitoring of foreigners, as was reported in the case of former national security adviser Michael Flynn, whose contacts with the Russian diplomat Sergei Kislyak led to his overthrow.

The reports that associates of trump has reached out to the Russians, known to American intelligence during the campaign, months of tormented trump, raising the question of whether these contacts are of any relation to Russia's intervention in US elections. The American intelligence community came to the conclusion that Moscow began an aggressive campaign of hacking to undermine the candidacy of Democratic candidate Hillary Clinton. The Russian government denies these claims, said the press Secretary of the Kremlin Dmitry Peskov in an interview with CNN's Fareed Zakaria that aired on Sunday: "Russia is demonized".

The house of representatives and Senate committees on intelligence stated that investigating the alleged involvement of Russia in the elections, and the White house asked Congress to include in its investigation of unreasonable charges trump the wiretap.
sections: Politics, World News, Accidents