I'm no lawyer, but...

Inspired by a recent article in the L.A. Times, here's the relevant text of the ECPA-amended US Code Title 18:

Section 2702. Voluntary disclosure of customer communications or records

 (a) Prohibitions. - Except as provided in subsection (b) -
       (1) a person or entity providing an electronic communication
     service to the public shall not knowingly divulge to any person
     or entity the contents of a communication while in electronic
     storage by that service; and
   (2) a person or entity providing remote computing service to
 the public shall not knowingly divulge to any person or entity
 the contents of any communication which is carried or maintained
 on that service -
     (A) on behalf of, and received by means of electronic
   transmission from (or created by means of computer processing
   of communications received by means of electronic transmission
   from), a subscriber or customer of such service;
     (B) solely for the purpose of providing storage or computer
   processing services to such subscriber or customer, if the
   provider is not authorized to access the contents of any such
   communications for purposes of providing any services other
   than storage or computer processing; and
   (3) a provider of remote computing service or electronic
 communication service to the public shall not knowingly divulge a
 record or other information pertaining to a subscriber to or
 customer of such service (not including the contents of
 communications covered by paragraph (1) or (2)) to any
 governmental entity.
 (b) Exceptions for disclosure of communications. - A provider
    described in subsection (a) may divulge the contents of a
    communication -
   (1) to an addressee or intended recipient of such communication
 or an agent of such addressee or intended recipient;
   (2) as otherwise authorized in section 2517, 2511(2)(a), or
 2703 of this title;
   (3) with the lawful consent of the originator or an addressee
 or intended recipient of such communication, or the subscriber in
 the case of remote computing service;
   (4) to a person employed or authorized or whose facilities are
 used to forward such communication to its destination;
   (5) as may be necessarily incident to the rendition of the
 service or to the protection of the rights or property of the
 provider of that service;
    (6) to a law enforcement agency -
     (A) if the contents -
       (i) were inadvertently obtained by the service provider;
     and
        (ii) appear to pertain to the commission of a crime; or
     (B) if required by section 227 of the Crime Control Act of
   1990; or
   (7) to a Federal, State, or local governmental entity, if the
      provider, in good faith, believes that an emergency involving
      danger of death or serious physical injury to any person requires
      disclosure without delay of communications relating to the
      emergency.
 (c) Exceptions for Disclosure of Customer Records. - A provider
    described in subsection (a) may divulge a record or other
    information pertaining to a subscriber to or customer of such
    service (not including the contents of communications covered by
    subsection (a)(1) or (a)(2)) -
   (1) as otherwise authorized in section 2703;
   (2) with the lawful consent of the customer or subscriber;
   (3) as may be necessarily incident to the rendition of the
 service or to the protection of the rights or property of the
 provider of that service;
   (4) to a governmental entity, if the provider reasonably
      believes that an emergency involving immediate danger of death or
      serious physical injury to any person justifies disclosure of the
      information; or
   (5) to any person other than a governmental entity.

I don't see anything in here that says "when the President decides to go on a terrorist hunt."