From
http://www.boingboing.net/2007/04/14/public_hearing_on_br.html :
"The US Patent and Trademark Office is holding public hearings on May 9 to discuss the US position on the WIPO Broadcast Treaty -- you can attend and even speak.
"The Broadcast Treaty is a proposal to let broadcasters (and "webcasters" -- people who host files and make them available to the Internet) claim a copyright to the stuff that they transmit. Broadcasters get this special right even if the stuff they're sending around is in the public domain, or Creative Commons licensed, or not copyrightable (like CSPAN's broadcasts of Congress). Fair use doesn't apply to this right.
"What this means is that a handful of corporations are going to be able to claim copyrights over billions of works they didn't create -- works that they've done nothing to improve, works they've done nothing for except electromagnetically modulating them.
"What this means is that these corporations are going to be able to trump the rights of actual creators. If you put a Creative Commons license on your video that allows your fans to share it, the "broadcaster" -- or the person who transmits it over the Web -- can override your wishes and tell your fans that they can't."
(snip; more at link.)