Tradesman seen to be unfit to occupy a high position (6)

I believe the answer is:

tailor

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'tradesman' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps you can see an association between them that I don't see?

I don't understand the rest of the clue.

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(Other definitions for tailor that I've seen before include "Clothes-maker" , "Garment maker" , "One makes suits etc. to measure" , "Specially adapt" , "Cut" .)

I've seen this clue in The Globe and Mail.

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