"No, I've never been an agent of a foreign power by any stretch of the imagination", he said. "It's literally a complete joke and it only just continues..." It's so sad, ' he added. "I also don't believe it proves anything about collusion", Rubio said.
The documents released Saturday include the FBI's October 2016 request to surveil Page and several renewal applications.
The October, 2016 application to the Foreign Intelligence Surveillance Court named Carter Page, a former foreign policy advisor to the Trump campaign, according to the documents published late Saturday by The New York Times.
Reacting to the document's contents, Page - who was not charged for his so-called spying activities - told Ross he is "H$3 aving trouble finding any small bit of this document that rises above completely ignorance and/or insanity".
'It's so misleading going through those 400 pages documents, ' Page said on CNN.
Tapper brought up a letter Page wrote where he described himself as an informal adviser to the Kremlin in advance of the 2013 G - 20 meeting in Saint Petersburg, Russia. On Sunday he minimized that work, saying "I might have participated in a few meetings that a lot of people including people in the Obama administration were sitting on" but said "there was nothing in terms of any nefarious behavior".
The request to wiretap Page noted that the resulting information could produce evidence of crimes.
The first three applications were signed by then-FBI Director James Comey, and the fourth by his deputy Andrew McCabe, after Trump fired Comey in May 2017.
The publication is also sure to fuel the political fight between Republicans and Democrats over the propriety of the surveillance and how it was legally justified. They also point out the proper procedure was followed in obtaining the warrant.
The FBI released the previously secret document cache on Saturday night following Freedom of Information requests by several U.S. organisations. He tweeted Sunday that the Russian Federation investigation is "an illegal Scam!"
The FBI has released documents related to the surveillance of a former campaign adviser to Donald Trump as part of its probe into whether the aide conspired with the Russian government to interfere in the 2016 US presidential election.
A spokesman for Special Counsel Robert Mueller, who is now leading the probe into Russia's interference in the 2016 election, declined to comment on the president's tweets. Mr Trump has labelled the investigation a "witch hunt".
"Democrat Party hired the Perkins law firm".
The FBI believed Carter Page was "collaborating and conspiring with the Russian government" at that time.
Rubio's comments come in contrast with the president's tweets Sunday morning, in which he claimed that Page was surveilled "for the political gain of Crooked Hillary Clinton and the DNC".