It's a bit aggravating when articles give dates for when something will "eventually go into the public domain" without a caveat that copyright terms in the US h

It's a bit aggravating when articles give dates for when something will "eventually go into the public domain" without a caveat that copyright terms in the US have been repeatedly and consistently lengthened retroactively. Going off the view that copyright extensions center around attempts to keep Mickey Mouse cartoons under copyright (1928 onward), a copyright date of 1935 means it is unlikely that Happy Birthday will ever go into the public domain if political views do not change.