A federal judge could allow a conservative legal group to question top aides to former Secretary of State Hillary Clinton about whether she deliberately sought to subvert open records laws by using a private email server.

Huma Abedin and Hillary Clinton in 2011 in Washington. (Photo by Jonathan Ernst/Getty Images)

U.S. District Court Judge Emmet G. Sullivan ruled Tuesday that Judicial Watch can prepare a plan for "narrowly tailored discovery" into the circumstances surrounding the Democratic presidential candidate's use of a home-based email server during her four-year stint as the nation's top diplomat. The lawsuit stems from a Freedom of Information Act request seeking records related to the employment status of Huma Abedin, Clinton's former deputy chief of staff.

The judge ordered Judicial Watch to submit its plan by March 15, the date of Democratic primaries in Florida, Ohio, North Carolina, Missouri and Illinois.

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