But Trump's tweet is wildly misleading, since special prosecutor Robert Mueller repeatedly affirmed in an indictment unveiled Friday that the Kremlin meddled in the 2016 us presidential election in a deliberate attempt to undermine American democracy, sabotage Hillary Clinton and boost Trump's campaign.
It allegedly involved "hundreds" of people working in shifts and with a budget of millions of dollars.
A "Support Hillary, Save American Muslims" rally was also part of a project to disparage Hillary Clinton.
Moscow dismissed the allegations as "absurd".
Included in the indictment was the Internet Research Agency (IRA), a notorious bot and troll farm known for spreading misinformation through fake accounts created on social media platforms including Twitter, Facebook and Instagram. Furthermore, Mueller has already produced four federal indictments against Trump associates over their contacts with Russians during the campaign.
The content was retweeted by the president's two eldest sons Don Jr and Eric, as well as other top campaign officials and members of Trump's inner circle. Deputy Attorney General Rod Rosenstein delivered the news.
He said there was also no judgment on whether the campaign "altered the outcome".
In November, Trump even said he believed Russian President Vladimir Putin's denials that the Kremlin interfered in the USA presidential election - despite a "high confidence" assessment from the US intelligence community saying that Russia did, indeed, interfere in the election. "The results of the election were not impacted". As part of the inquiry, former Trump campaign manager Paul Manafort has been charged with conspiring to defraud the USA by abetting with Ukraine, and to launder money.
The allegations are a double-edged sword for Trump, who has repeatedly dismissed claims of Russian interference as "fake news" and a "hoax" created to take away from his election victory.
According to one internal communication detailed in the indictment, the specialists were instructed to "use any opportunity to criticize Hillary and the rest (except Sanders and Trump-we support them)".
Russian Federation is also suspected of hacking and leaking embarrassing Democratic e-mails. "The Russia investigation is the opposite of a hoax".
Trump has publicly mulled firing the former FBI director and has repeatedly sought to influence his investigation through public warnings.
Russian Foreign Minister Sergei Lavrov on Saturday dismissed as "blabber" accusations that Moscow had interfered in the USA election that brought President Donald Trump to power.
Two defendants traveled to the U.S.in June 2014 to gather intelligence on social media sites and identify targets for their operations, the indictment alleges. "We must unite as Americans to protect the integrity of our democracy and our elections".
The FBI's indictment carries new tidbits about how its operatives stole Americans' Social Security numbers and drivers' licenses to help pull off their fakery.
The group purchased ads on social media and other websites either "expressly advocating for the election of then-candidate Trump or expressly opposing Clinton", the indictment said.
The Russians measured the impact of their social media operations by tracking the size of the USA audience reached through social posts and other types of engagement, such as likes, comments, and reposts.
In one case, it said, the Russians paid an unidentified person to build a cage aboard a flatbed truck and another to wear a costume "portraying Clinton in a prison uniform".