This is classic--the U.S. Copyright Office posted a notice asking for public comment on their plan to only support Microsoft's Internet Explorer for viewing sections of their site. Even the COPYRIGHT OFFICE can't seem to understand the importance of interoperability, and why should they--it's their system that's being abused by software companies every day. For example, Microsoft has a patent pending for displaying numbers in a box to make them stand out.
You would think that wasn't patentable, but you would sadly be sane.