There are two questions at the top of the [Pearl Harbor] foreknowledge list: (1) whether President Franklin D. Roosevelt and his top military chieftains provoked Japan into an "overt act of war" directed at Hawaii, and (2) whether Japan's military plans were obtained in advance by the United States but concealed from the Hawaiian military commanders, Admiral Husband E. Kimmel and Lieutenant General Walter Short....
The latter question was answered in the affirmative on October 30, 2000, when President Bill Clinton signed into law the National Defense Authorization Act. ...Congress was specific in its finding against the 1941 White House: Kimmel and Short were cut off from the intelligence pipeline that located Japanese forces advancing on Hawaii. ...these congressional findings should be widely seen as an exoneration of 59 years of blame assigned to Kimmel and Short.
But one important question remains: Does the blame for the Pearl Harbor disaster revert to President Roosevelt? --December 7, 1941: A Setup from the Beginning: Robert B. Stinnett, Newsroom: The Independent InstituteThat question was answered when Mr. Stinnett's persistent FOIA requests finally obtained the key documents, which, as he puts it, had been "Immediately after December 7, 1941, ...locked in U.S. Navy vaults away from the prying eyes of congressional investigators, historians, and authors."
In getting these key documents, Mr. Stennett got slightly lucky: They had been transferred from the Navy to the National Archives which hadn't recognized the, ah, "sensitivity" of the material yet. His final FOIA went to the The National Archives.
How long does it take to expose a major conspiracy? To uncover the Pearl Harbor conspiracy, it took luck and approximately 59 years of persistent effort. With Uncle Sam kicking and screaming all the way.