[tzs]

There has been one copyright extension that can reasonably blamed on Disney lobbying.

There was one other that also affected Disney's copyright terms, but I can't find any evidence that Disney did any lobbying for that one, and even if they did it wouldn't have made a difference because that one had near universal support anyway because it was part of a major rewrite of US copyright law that did the most of the heavy lifting to make it feasible for the US to join the Berne Convention.