If the information is true, this is sickening. Why bypassing warrants and all the criminal procedure guarantees? to detect serious fraud? minor fraud? terrorists using their card to buy a packet of crisps? Come on, the latter will certainly not use a credit card: too much traces left, without even the feds spying.
Maybe we should offer a course in 4th Amendment principles to police officers. They seem to have forgotten the basics.
Appeals Court Says Emails Are Protected By The 4th Amendment, TechDirt, 14 December 2010