Earlier quoted context omitted.
It's a matter of official policy to include legal loopholes that enable the Federal government to assert its power rather than comply with the law.
"Bernard, the Official Secrets Act is not to protect secrets, it is to protect officials."[1] [1] Sir Humphrey Appleby, Jobs for the Boys (e/o "Yes Minister"), Jay A and Lynn J, BBC; first broadcast April 7, 1980.
"In no case shall information be classified ... in order to conceal ... administrative error; prevent embarrassment ..."
See section 1.7(a) of http://en.wikisource.org/wiki/Executive_Order_13526