The New York Times is reporting the country’s intelligence agencies have been secretly reclassifying thousands of historical documents that had been declassified and available to the public. The program began in 1999 and intensified after President Bush took office. Documents that have been reclassified include a 1948 memo on a CIA scheme to float balloons over Soviet-backed countries and drop propaganda leaflets. It appears another document was reclassified in order to hide a mistake made by the CIA 55 years ago. On October 12, 1950, the CIA concluded China would not intervene in the Korean War that year. Two weeks later, 300,000 Chinese troops crossed into Korea. Some historians fear they could now be tried under the Espionage Act because they have copies of files that are no longer declassified.