After learning that the Bush administration claimed [0] that the Office of Administration wasn't subject to Freedom of Information Act requests, CREW did some research. Seems the White House website, which is an official voice of the Bush administration, states otherwise:

In fact, evidence that the Office of Administration is subject to FOIA requests is made here [1] and here [2] and here [3] and here [4] on the White House website and even once on the Department of Justice site here [5].

Melanie Sloan issued a statement about the Bush administration's claim about the Office of Administration:

The newly minted argument that the Office of Administration is not an agency is akin to the Vice President's declaration that he is not a part of the executive branch. One has to wonder if this is an effort by the White House to keep secret the details of how millions of White House email suddenly went missing.

The OA's disingenuous claim that it is not subject to the FOIA is contradicted by its own actions and statements. On the White House's own website, the OA is designated as one of the few components in the Executive Office of the President subject to the FOIA. The website also provides a link to the OA's FOIA regulations and identifies an OA FOIA officer.