The US must leak like a sieve on intelligence matters in general, so is it unlikely that even our friends would be spying on us? Heck, Monica Lewinsky and even Chandra Levy might've been Israeli agents. Clinton and Condit sure seemed ripe for the picking.
We should just assume it's being done, though continue our commitment to one of the only countries in the world that continues to seize the initiative to act, as opposed to perpetual victims who'd rather sit around on their hands, or blackmail the world by terror, demanding that statehood and/or respect merely be handed them.