This 24-page brief on the president's constitutional authority to conduct the NSA surveillance provides a strong and detailed legal defense of the president's actions. Its author is a former career national security official who served during the Clinton administration, as well as the current administration. And over at National Review Online, Andrew McCarthy has an excellent post, "IS THE PRESIDENT 'ABOVE THE LAW?' (scroll down a bit)," on the amnesia of several former Clinton administration officials on the FISA issue.