Republicans have continued to focus on the FBI's handling of the Clinton probe, which ended just prior to the 2016 presidential election, due to former FBI Director James Comey's decision to announce that he would not recommend the Justice Department charge Clinton or her staff for sending classified documents over the former secretary of state's private email system.
Before the Obama administration approved a controversial deal in 2010 giving Moscow control of a large swath of American uranium, the Federal Bureau of Investigation had gathered substantial evidence that Russian nuclear industry officials were engaged in bribery, kickbacks, extortion and money laundering created to grow Vladimir Putin's atomic energy business inside the United States, according to government documents and interviews.
Since uranium is considered a strategic asset, with implications for national security, the deal had to be approved by a committee composed of representatives from a number of United States government agencies.
Nunes is an avid defender of Trump and was stripped of his lead role in the House Intelligence Committee's Russian interference investigation earlier this year for politicizing it.
The New York Times has previously reported that the chairman of Uranium One donated four times to the Clinton Foundation before and after 2010. Russian Federation later assumed full ownership of the company.
The Republican chairman of the House intelligence committee, Rep. Devin Nunes, also announced a separate investigation into a uranium deal brokered during President Barack Obama's tenure.
Nunes has become a focal point of such efforts before.
Clinton was not mentioned during the press conference as part of the Russian Federation investigation.
Nunes said Tuesday that he has not spoken with the White House about the uranium matter.
He added that the committee has been looking into the matter and meeting with "informants" for several months, and that the White House has not been involved. On Monday, Clinton called GOP concerns about the deal "baloney".
Ian Prior, a Justice Department spokesman, said the department plans to "fully cooperate with this important congressional investigation".
Nunes announced his new probe days after Fusion GPS - the firm behind the explosive Steele dossier - accused him of going back on his April decision to step away from the Russian Federation investigation.