See, after this paragraph I want to know whether, how and why the US deviates from what I thought was the general rule (with the odd exception in some less important country here or there) of things being released to the public domain seventy years after death of author/composer/whatever.

Oh wait, I think I get it now... the US does not deviate from that rule at all, but the point is merely that due to the law having changed at some point in the relatively recent past, the net effect is that for the next few decades nothing will enter the public domain because the works that normally *would* be entering public domain after seventy years after death of author, are already in it thanks to the looser rules before.

Seems a bit silly to be whining about nothing entering the public domain, then, and especially silly to make that comparison to the EU, as they use the exact same public domain rules as the US now.