During an Oct. 9 presidential debate, then-Republican nominee Donald Trump vowed that, if elected to the presidency, he would have someone look into whether former Secretary of State Hillary Clinton mishandled classified information.

Six months into his presidency, Trump has made good on that promise, as the State Department has opened a formal inquiry into whether Clinton and her aides violated government protocols by using her private server to receive, hold and transmit classified and top-secret government documents, according to Fox News.

Depending on the results of the department’s probe, Clinton and her aides could lose their still-active security clearances — and their access to sensitive government information.​

Senate Judiciary Committee Chairman Sen. Chuck Grassley, an Iowa Republican, confirmed that the State Department was looking into Clinton’s handling of emails, and his committee also began an inquiry into the situation in March.​