Innocentbystander, I wanted to comment on your statement regarding the A&Ps issued with the "Not Valid in USA" stamped on it. This was not done in and effort to regulate imported aviation talent , lord knows there is a limited supply, but was done only if the applicant could not speak and/or understand the english language (as this is an A&P requirement). Several applicants come to the USA to recieve thier A&P but are not able read the language therefor would not be capable of verifying SBs, ADs, limiting thier research potential. This "Not Valid is USA" stamping has not been done since the late 80s. If you happen to know anyone that has an A&P with this limitation it is easy to be removed with a continuing education credit (English 101) from any approved educational establishment.