The White House Thursday said President Obama had no reason to be "unsettled" by allegations that Hillary Clinton used her former post as the nation's top diplomat to benefit her family's charitable organization.

"There has not been any evidence presented that would prompt the president or anybody at the White House to be unsettled" with Clinton's conduct as secretary of state, White House press secretary Josh Earnest said.

The New York Times reported Thursday that then-Secretary of State Clinton signed off on a deal allowing Clinton Foundation donors to sell a uranium mining company to a Russian nuclear agency.

For weeks, Republicans have sought to raise questions about Clinton's tenure at State. Clinton's acknowledgement that she exclusively relied on a private email server and domain as secretary of state, coupled with allegations against the Clinton Foundation, could damage perceptions of the trustworthiness of the presumptive 2016 Democratic nominee for president.

According to the Times, when she joined the Obama Cabinet, Clinton didn't disclose the donations made to the Clinton Foundation by major Uranium One investors.

The Clinton Foundation also announced Thursday that it would re-file tax returns for several past years, to include donations by foreign governments, which the foundation omitted from previous filings.