The US also gets some intel that Israel is willing to share. How much that is of all they collect is probably well short of 'all'.
Especially the stuff their US spies deliver for blackmail purposes...
...and don't forget this little gem:
"CONFESSIONS OF AN EX-MOSSAD AGENT
Excerpt from Victor Ostrovsky's, "By way of deception"
""It's the old Trojan dick trick.
A Trojan was a special communication device that could be planted by naval commandos deep inside enemy territory. The device would act as a relay station for misleading transmissions made by the disinformation unit in the Mossad, called LAP, and intended to be received by American and British listening stations. Originating from an IDF navy ship out at sea, the prerecorded digital transmissions could be picked up only by the Trojan. The device would then rebroadcast the transmission on another frequency, one used for official business in the enemy country, at which point the transmission would finally be picked up by American ears in Britain.
The listeners would have no doubt they had intercepted a genuine communication, hence the name Trojan, reminiscent of the mythical Trojan horse. Further, the content of the messages, once deciphered, would confirm information from other intelligence sources, namely the Mossad. The only catch was that the Trojan itself would have to be located as close as possible to the normal origin of such transmissions, because of the sophisticated methods of triangulation the Americans and others would use to verify the source.
In the particular operation Ephraim was referring to, two elite units in the military had been made responsible for the delivery of the Trojan device to the proper location. One was the Matkal reconnaissance unit and the other was Flotilla 13, the naval commandos. The commandos were charged with the task of planting the Trojan device in Tripoli, Libya."
CONFESSIONS OF AN EX-MOSSAD AGENT
