So Much for the 4th Amendment?

Apparently the FBI in Maryland needn't bother obtaining warrants before seizing computers; if they have a good enough show, library directors will just hand over the equipment?

http://wtopnews.com/?nid=598&sid=1452848

Now, let's pretend we didn't hear this week that the DHS can seize any electric gizmo without any cause and keep the gizmos indefinitely.