I know there’s a measure of FISA-exhaustion out there, but it’s worth keeping an eye on the looming constitutional fight over the FISA Amendments Act—or, as I prefer to call it, in homage to the epic rivalry between James Tiberius Kirk and Khan Noonien Singh: “FISAAA!”  I’ve got a writeup at Ars with a summary of the current state of play and a preview of the arguments the Electronic Frontier Foundation is preparing to make against the law’s retroactive immunity provision.