http://www.msnbc.msn.com/id/14393611/
Warrantless wiretaps are illegal inside the US. They admitted using warrantless wiretaps inside the US. There are emergency workarounds in the form of the FISA court. They did not follow that law.
http://www.postchronicle.com/news/br...21271655.shtml
Warrantless/subpoenaless searches are illegal. They have an end-run around this in the form of "national security letters" which are supposed to be used for emergencies. But they broke the law even in their workaround.