There have also been reports that Ecuador and Britain have reached, or are about to reach, a deal on ending the asylum for Assange.
Assange has been holed up in the Ecuadorian embassy in London since June 2012, having been granted asylum, and later citizenship, by Ecuador.
The Senate intelligence committee sent a letter to the founder of Wikileaks, Julian Assange, requesting that he appear to answer questions from lawmakers at a closed-door session.
Perseid meteor shower: how to see shooting stars this weekend
And while some pesky clouds will be around on Friday and Saturday, forecasts show a return to clear skies on Sunday and Monday. For casual and die-hard astronomers alike, the middle of August means the return of the Perseid meteor shower.
WikiLeaks founder Julian Assange makes a speech from the balcony of the Ecuadorian Embassy, in central London, Britain, February 5, 2016.
Assange was granted political asylum by Ecuador for the objective of avoiding extradition to the United States, where he is believed to be wanted for leaking government secrets.
The WikiLeaks legal team said they are "considering the offer but testimony must conform to a high ethical standard".
WikiLeaks famously published emails from the Democratic National Committee (DNC) and Clinton campaign chair John Podesta that were allegedly hacked by the Russian government.
He said the claims were a political smear linked to WikiLeaks' work and said he feared being transferred from Sweden to the United States to face trial for the release of leaked U.S. military documents. Those allegations have since been dropped but Assange would be arrested by British police, should he leave the embassy, for breaching bail conditions.
The alleged interest comes amid an ongoing investigation by Special Counsel Robert Mueller into alleged collusion between Donald Trump's presidential campaign and Russian Federation to help him secure a victory.