But the Constitution bans only "unreasonable" search and seizure, not all searches and seizures, and the Fourth Amendment allows for exceptions such as those under a President's Article II war powers. The courts have been explicit on this point. In 1980, the Fourth Circuit Court of Appeals held in Truong that "the Executive need not always obtain a warrant for foreign intelligence surveillance." The FISA appeals court said in its 2002 opinion In re Sealed Case that the President has "inherent authority to conduct warrantless searches to obtain foreign intelligence information" and took "for granted" that "FISA could not encroach on the President's constitutional power."

the whole idea that non-Americans somehow have constitutional rights is just crazy. I have no rights in France or China or Russia or Afganistan, but somehow people plotting to kill Americans are protected?