Re: they're a spy agency
Not if it's a _US_ spy. Then it's a LAWFUL combatant (read: one on OUR side). As for the 4th Amendment, they'll just say that in a world where the slightest innocuous codeword can trigger an existential threat, all bets are off and all searches are reasonable. Otherwise, the US, if not the entire world, is DOOMED. If the government cannot defend itself, what good is government at all?