If you guys want to be sure that the RFID is disabled, visit the local machine shop in your town. Odds are that they have a thing called a bearing heater. What its used for is heating up gears and bearings so they can be fitted onto shafts (when you heat metal, it expands and makes fitting easier). The bearing heater can turn a large, steel gear or bearing red hot by subjecting it to a very powerful oscillating magnetic field. This thing would probably fry in the blink of an eye; it'll take out the RFID tag quite handily.
Our engine shop had a oil soak bearing heater - but what about a degausser? We had a bearing degausser that you could hear go off on the other side of the hangar, and you couldn't wear a watch within ten feet of the bearing room, or it would toast it when they fired it off.
Here is a possible home brew remedy, turn your class D or class E microwave into a iron forge. I think it might melt the entire passport though.
http://home.c2i.net/metaphor/mvpage.html