On the constitutional analysis...
http://online.wsj.com/article/SB1000...276402574.html
is an op-ed arguing that it is unconstitutional.
Then this op-ed
http://articles.washingtonpost.com/2...a-surveillanceargues that it might be legal but it isn't constitutional.
From the Washington post we then have
http://www.nytimes.com/2013/06/28/op...anted=all&_r=0...
which then goes on at length talking about each of the programs that is a problem.
Now clearly there are legal theories on the other side (for example,
thisis a very long post arguing that it is currently legal). However, like I said, if this is allowed to stand as legal precedence, it seems to me that the 4th amendment has a MUCH narrower view than I am comfortable with.