11.   Attempts to infiltrate undercover agents into the gang have failed.

12.   An undercover agent who was tortured and murdered by the I-R-A fifteen years ago may at last be given a proper burial.

13.   American officials did not inform Mexico about the operation while it was under way in order, they said, to protect undercover agents and secret informants.

14.   American intelligence agencies will argue that some of the information they possess cannot be disclosed without compromising undercover agents and collection methods.

15.   An undercover agent subsequently visited the office posing as an illegal immigrant.

16.   An American undercover agent and his informant, posing as money launderers, had been introduced to a Mexican state prosecutor who they thought was corrupt.

17.   An undercover FBI agent posed as a customer and was introduced to Levin by the informant, the record says.

18.   An undercover agent warned ATF officials, but the raid went forward.

19.   And in a separate customs case in Houston, undercover agents had been approached about laundering millions of dollars for an unnamed Mexican army general, officials said.

20.   And it is unlikely that an undercover agent would use a car with a yellow Israeli license plate, which stand out clearly among Palestinian Authority plates.