Story highlights Ryan made the request after Clinton's email use was criticized by the FBI

Washington (CNN) House Speaker Paul Ryan's attempt to block Hillary Clinton from receiving intelligence briefings once she's formally nominated by Democrats -- given her use of a private email server -- has failed.

Director of National Intelligence James Clapper told Ryan in a latter obtained Monday by CNN that he "does not intend to withhold briefings from any officially nominated, eligible candidate."

Ryan made the request after Clinton was severely criticized by the FBI for her email use, but not punished.

"Nominees for president and vice president receive these briefings by virtue of their status as candidates, and do not require separate security clearances before the briefings," Clapper wrote to Ryan. "Briefings for the candidates will be provided on an even-handed non-partisan basis."

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