http://archivep75mbjunhxc6x4j5mwjmomyxb573v42baldlqu56ruil2oiad.onion/details/nsa?page=116
And, in fact, I'm so sure that these communications exist that I've called on congress to write a letter to the NSA to verify that they do. Write to their office of general counsel and say, did Mr. Snowden ever communicate any concerns about the NSA's interpretation of its legal authorities?