Thanks for posting this.
OK, ndt, here is your chance to shine, go through the AAG's letter posted in post 252 and refute each point, if you can.
I found the FR posting of the AAG's letter with all the links to the cases mentioned.
Assistant Attorney General's Letters to Senate Intelligence Committee Regarding NSA Spying Program
http://www.freerepublic.com/focus/f-news/1545787/posts