The Foreign Intelligence Surveillance Court, responsible for overseeing the US government's foreign surveillance activities via FISA, actually does have a public website. They seem to have just created it, as it doesn't have any documents from before June of 2013, and the Wayback Machine has no record of it prior to that.
The FISA Court has so little public business that their entire website is a small list of links to scanned PDFs. (Don't bother
Ctrl+F-ing or trying to copy/paste, they're all images.) But they're busy these days, as the EFF, ACLU, Google, Microsoft, and now an "anonymous" "Provider"
It's Yahoo! asking the Court to unseal an old opinion. have all been filing petitions with the Court while simultaneously requesting to make them public.
Of course, there's no RSS feed, but the wonderful public service of ChangeDetection.com will track this page for you and email you upon any change. As of this post, I'm the only one using the service to do this.
And in fact, ChangeDetection will make you an RSS feed, though as far as I can tell it's only account-wide. So I made a new account just to follow the FISA Court page, and here's my RSS feed you can use to follow the public activity of the FISA Court — jaundiced as it is — wherever RSS is accepted: