What about JAR FI's conducting FAA BFR's
They can't and rightfully so, equally justified...a FAA FI cannot sign off on a CAA/JAA renewal or proficiency check.
Also if we didn't allow FAA instructors to reach JAR students then we might just find it easier to get VISA's to work in USA. Not going to happen if we rubber stamp FAA FI's to do our work for us.
No argument here, but remember it is your beloved CAA that allows it.
Our opinion truly does not make a difference..unfortunately..