quixote, Neither of those cases would be considered an addendum to rules governing Public Domain. I'm not familiar with the 1st case but unless the author based his code on, freely available preexisting code or specifically gave up his rights it still wouldn't be considered Public Domain.. The 2nd case would be considered 'fair use' in which portions of a work (in this case the Senators statement) can be quoted for purposes of 'education, parody, or satire'