The Fourth Amendment

Does the Fourth Amendment still count? In W's view, I guess not. But as far as the courts:

Unanimously, the Court held that at least in cases of domestic subversive investigations, compliance with the warrant provisions of the Fourth Amendment was required.Whether or not a search was reasonable, wrote Justice Powell for the Court, was a question which derived much of its answer from the warrant clause; except in a few narrowly circumscribed classes of situations, only those searches conducted pursuant to warrants were reasonable. The Government's duty to preserve the national security did not override the gurarantee that before government could invade the privacy of its citizens it must present to a neutral magistrate evidence sufficient to support issuance of a warrant authorizing that invasion of privacy. This protection was even more needed in ''national security cases'' than in cases of ''ordinary'' crime, the Justice continued, inasmuch as the tendency of government so often is to regard opponents of its policies as a threat and hence to tread in areas protected by the First Amendment as well as by the Fourth. Rejected also was the argument that courts could not appreciate the intricacies of investigations in the area of national security nor preserve the secrecy which is required.
The question of the scope of the President's constitutional powers, if any, remains judicially unsettled. Congress has acted, however, providing for a special court to hear requests for warrants for electronic surveillance in foreign intelligence situations, and permitting the President to authorize warrantless surveillance to acquire foreign intelligence information provided that the communications to be monitored are exclusively between or among foreign powers and there is no substantial likelihood any ''United States person'' will be overheard.

Next argument will be that PETA and other U.S. based groups that were targeted were "foreign agents".