The title/question came to me after watching the last two skating competitions. All the judges are list their affiliation as ISU, but all of them have had national affiliations.
An example of this was the 2012 Worlds ice dance competition, where the technical specialist was Marie Bowness (CAN), and on the judging panel was Jodi Abbott, of Edmonton, Alberta. The ISU once passed a rule to prevent having two judges from the same country, after there was controversy when Sonja Henie won one of her world titles when there were two Norwegian judges on the panel.
The tech panel decides the levels, etc...and the judges assign scores. Is it fair to have two from the same country?