DAILY CALLER NEWS FOUNDATION—The Federal Bureau of Investigation did not review thumb drives containing potentially significant evidence while investigating Hillary Clinton’s private email server, according to a newly declassified report.

An FBI draft memo from May 2016 stated reviewing the thumb drives would be necessary to conduct a “thorough and complete investigation,” including assessing national security risks associated with the private server. Yet the agency “never finalized the memorandum or submitted this request to the department,” according to the document released Monday by Senate Judiciary Committee Chairman Chuck Grassley.

The document is the appendix to a 2018 Department of Justice Office of Inspector General report examining the FBI’s Clinton investigation. Grassley has been seeking information........

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