Joe Biden’s choice for national security adviser, Jake Sullivan, is an interesting choice. Before, being selected for the White House position Sullivan worked closely with Hillary Clinton, even sending hundreds of classified emails on her private email network. Sullivan also touted a since-debunked conspiracy about Donald Trump as fact in an effort to convince American’s that he was working with Russia to secure the 2016 election.

Sullivan first worked with Hillary Clinton while she served as secretary of state, he then went on to work with Vice President Biden as a national security adviser. When Hillary Clinton was investigated over her use of a private email server for government work Sullivan was right beside her. The FBI found that Sullivan, as well as Clinton, had participated in sending hundreds of emails that contained classified information.

The Daily Caller reports:

Clinton and her group of top aides, including Sullivan, Huma Abedin and Cheryl Mills, exchanged thousands of emails that the FBI and other agencies found to have contained classified information.

As of March 2016, the State Department and FBI had determined that Sullivan sent 215 emails that were deemed to contain classified material. Politico reported in February 2016 that Sullivan sent emails to Clinton that contained information classified at the “top secret” level, the highest classification category.

In addition to helping Crooked Hillary send classified government information across her private email server, Sullivan also built up a story that alleged the Trump Organization was connected to Alfa Bank, a top private Russian bank. The story proved to be completely false.

“This could be the most direct link yet between Donald Trump and Moscow,” Sullivan said in a statement responding to a story published by Slate on Oct. 31, 2016.

“This secret hotline could be the key to unlocking the mystery of Trump’s ties to Moscow.”