The Clinton Foundation confirmed it accepted a $1 million gift from Qatar for Bill Clinton's 65th birthday in 2011 while Hillary Clinton was Secretary of State, Reuters reports.
Hillary had promised to inform the agency of new donations from foreign governments, but did not do so in this case. She had signed the ethics agreement in 2011.
Spokesman Brian Cookstra said earlier this week the gift did not count as a "material increase" in donations which would have required notification.
The State Department said it had no record of the Clinton Foundation submitting the Qatar gift for review. The nation has given between $1 million and $5 million over the years, according to the Clinton Foundation.
At least eight other countries gave new or bigger donations the foundation without the State Department being informed, Reuters reports. This includes Algeria, which gave for the first time in 2010 and the United Kingdom, which nearly tripled its support for a foundation health project between 2009 and 2012.
Recently, leaked emails linked the Clinton Foundation to personal income for Bill Clinton.
Clinton critics saw this as a serious roadblock to foreign policy.
But supporters pointed to problems within the Trump Foundation.