Washington (AFP) – The top US intelligence official has said over-classification of government information to keep it secret hurts national security, according to a letter released Thursday. Director of National Intelligence Avril Haines told two senators in a January 5 letter that the system that designates huge amounts of information “secret” or “top secret” is a “fundamentally important issue” that needs active reform. “It is my view that deficiencies in the current classification system undermine our national security, as well as critical democratic objectives,” she wrote in a letter to Se…