44 U.S.C. § 1505: Documents to be published in Federal Register

Presidential proclamations and Executive orders, except those not having general applicability and legal effect or effective only against Federal agencies or persons in their capacity as officers, agents, or employees thereof; documents or classes of documents that the President may determine from time to time have general applicability and legal effect; and documents or classes of documents that may be required so to be published by Act of Congress. In addition to the foregoing there shall also be published in the Federal Register other documents or classes of documents authorized to be published by regulations prescribed under this chapter with the approval of the President, but news commentary or news items of any character may not be published in the Federal Register. In a continuity of operations event in which the Government Publishing Office does not fulfill the publication requirements of this chapter, the Office of the Federal Register may establish an alternative method to publish the Federal Register until such time that the Government Publishing Office resumes publication. publication of the Federal Register or filing of documents with the Office of the Federal Register is impracticable, or under existing conditions publication in the Federal Register would not serve to give appropriate notice to the public of the contents of documents, the President may, without regard to any other provision of law, suspend all or part of the requirements of law or regulation for filing with the Office or publication in the Federal Register of documents or classes of documents.