A new fact sheet from the Office of the Director of National Intelligence.
From the ODNI IC Record Blog:
ODNI CLPT has released a new resource containing links to certain officially released documents related to the use by the Intelligence Community (IC) of national security authorities. These documents have been published to meet legal requirements, as well as to carry out the Principles of Intelligence Transparency for the IC. Please note, there are many more officially released documents available for public review than those captured in this new guide.