His associate, radio host Randy Credico, said Assange would speak with Congress if they traveled to the Ecuadorian embassy in London.
Assange's claims run contrary to the Senate intelligence committee's findings that Russian Federation was behind the hacking of the DNC.
Assange has remained sequestered, for the time being, in the Ecuadorian embassy in London, where he has been given diplomatic asylum after his controversial website Wikileaks published thousands of confidential defense and diplomatic documents in 2010.
Pamela Anderson's self-described "romantic connection" with Julian Assange, as reported by Fox News, suddenly spices up the long-running investigation of Wikileaks' connections to Russian interference in the 2016 US election.
WikiLeaks' legal team said that they "are considering the offer but testimony must conform to a high ethical standard".
In the invitation letter, dated August 1, the the Senate Intelligence Committee asks if Assange is "available for a closed interview" at a "mutually agreeable time and location".
Moreno told the Spanish newspaper El Pais in an interview in the last week of July that Ecuador was not helping Assange to exercise his rights by prolonging his stay in Ecuador's London embassy, and therefore had to find a way to end the impasse.
Sweden dropped its investigation into Assange over allegations of sexual offenses in May 2017.
Assange has long figured into the Russian Federation investigations due to WikiLeaks' role in releasing hacked emails from Hillary Clinton's campaign in 2016.
He fears that if he leaves the building he will be extradited to the United States for questioning over the activities of WikiLeaks, which has published reams of military and diplomatic secrets.
But according to Daily Beast reporting and special prosecutor Robert Mueller, Guccifer2.0 was a fictitious entity created by the GRU, Russian military intelligence.