erm...well he might be actually. I know people who went into the airlines, and becasue of sept 11th were binned, and now working back as instructors.
You'd probably stand a better chance if you go to a school, do all your training with them, and then ask for a job. Another thing you could do is approach the CAA registered schools in the US, as to train for the JAA licence abroad the instructor has to have "knowledge" of JAR....whatever that means!
Mind you, to instruct in the US you will have to do your CPL, IR, CFI / CFII check rides / exams, so it'll cost a bit of dough.