Tony,
Interesting. When was the last such IR completed? My reading of the FAA's information on this suggests otherwise but I'm keen to learn what actually happens for practical tests on a 61.75 certificate (i.e. FAA PPL issued on basis of foreign licence).
Please see
http://www2.faa.gov/avr/afs/flightinstruction/index.cfm
and therein
New! Foreign Pilots: U.S. Certification (DOC) (HTML)
http://www2.faa.gov/avr/afs/flightin...n/n8700-15.htm
and the FAQ for the above
* Background information and commonly asked questions
http://www2.faa.gov/avr/afs/flightin...8700-15FAQ.rtf
particularly Question/Answer No. 11.