"The standard for senior officials to learn the names of U.S. persons incidentally collected is that it must have some foreign intelligence value, a standard that can apply to almost anything. This suggests Rice's unmasking requests were likely within the law."
https://www.bloomberg.com/view/articles/2017-04-03/top-obama-adviser-sought-names-of-trump-associates-in-intel
"Former intelligence officials have described unmasking as a routine part of the intelligence process, and no reports so far have shown that Rice's request bypassed proper channels."
http://thehill.com/blogs/blog-briefing-room/news/327144-trump-jr-praises-writer-who-pushed-pizzagate-conspiracy-theory