Comment by ghaff

However, it may be and in most cases is probably still copyrighted (with some exceptions such as US government content). Archiving is probably OK in most cases. Making that archive available to the public (e.g. Wayback Machine) is something that gets a blind eye turned on but there's probably not much legal backing for that--and which, to date, pretty much no one has wanted to try to build a legal case around.