“The President, after all, is the Commander in Chief of the Army and Navy of the United States” according to Article II of the Constitution, the courts majority wrote. “His authority to classify and control access to information bearing on national security ... flows primarily from this constitutional investment of power in the President, and exists quite apart from any explicit congressional grant.”
Steven Aftergood, director of the Federation of American Scientists Project on Government Secrecy, said that such authority gives the president the authority to “classify and declassify at will.”
Even politifact had so admit it was possible...