The Russian government is trying to directly lobby American lawmakers to prevent a possible intervention in Syria, according to CNN.
The report cites Russian embassy officials in Washington as saying that they are trying to organising a meeting between Russian diplomats or politicians and US Senators and House leaders from both parties.
The White House has commended the Senate Foreign Relations Panel for moving swiftly to approve a resolution authorising US military action in Syria.
The US Senate Foreign Relations Committee has backed the draft resolution authorising the use of military action in Syria by 10 votes to seven.
The draft resolution will still have to be approved by Congress.
US Defence Secretary Chuck Hagel told the House of Representatives hearing he estimates the cost of a limited military strike against Syria will be "tens of millions of dollars".
Protesters tried to interrupt the US Secretary of State John Kerry as he made the case for military action against Syria at a House of Representatives hearing.
Seated behind Kerry, some of the demonstrators held their hands, which were painted red, in the air as he spoke, whilst others had pink tape strapped across their mouths.
At one point, a man wearing a sign on his shirt saying "US out of Syria" stood up and walked past Kerry, holding up a small sign that read, "Killing poor people is patriotic"
US Defence Secretary Chuck Hagel told a House of Representatives hearing the "likelihood is very high" that Syrian President Bashar al-Assad would use chemical weapons again if America fails to act.
The US defence chief told the House Foreign Affairs Committee that a strike on Syria would not be a "pin prick" and would reduce Assad's military capability.
The US Senate Foreign Relations Committee is like to vote later this evening on a draft resolution authorising the use of military action in Syria.
Republican Senator Bob Corker told Reuters he sensed the panel vote will take place later, but that discussions are to continuing.
President Obama said he was "always hopeful" that Russian President Vladimir Putin would change his position on Syria.
US Republican Senator John McCain has said he does not back the Senate panel draft resolution authorising use of force in Syria.
"There are a number of people who are unhappy," McCain told reporters on Capitol Hill.
The Senate Foreign Relations Committee draft was narrower than the request made by President Obama, and the panel, of which McCain is a member, may vote on it later today.
Senator McCain has been calling for US intervention in the civil war for many months now.