Per the Washington Post:
The Bill, Hillary and Chelsea Clinton Foundation will amend tax returns filed to the IRS in recent years to reflect that it accepted donations from foreign governments, a foundation official said Thursday.
The official said the organization is reviewing its tax returns for 2010, 2011 and 2012 and anticipated refiling the returns after the review is complete. The amendment, which was first reported by Reuters, is necessary because the foundation inaccurately reported to the IRS that it had accepted no government money in those years.
In fact, the foundation has acknowledged accepting millions in donations from foreign governments in those years, which overlapped with the time Hillary Rodham Clinton served as secretary of state.