The aide closest to Hillary Clinton will be deposed Tuesday about her emails.

Huma Abedin, who worked her way up from White House intern to vice chair of Clinton’s campaign for president, will be questioned under oath by lawyers for lawyers of the conservative group Judicial Watch about her involvement with her boss’ private email system.

The deposition comes more than a month after DC District Court Judge Emmet Sullivan, who was appointed by President Bill Clinton in 1994, granted Judicial Watch the right to interrogate Clinton aides as part of a Freedom of Information lawsuit to secure emails that should have been open to public review.

Patrick Kennedy, undersecretary for management at the State Department, will also be deposed by Judicial Watch lawyers on Wednesday.