Film-maker Mack reported governing body (6)

I believe the answer is:

senate

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'governing body' is the definition.
(type of governing body)

I don't understand the rest of the clue.

(Other definitions for senate that I've seen before include "Upper house of the US Congress" , "Governors here" , "Upper council of university" , "Legislative body" , "Upper assembly of US" .)

I've seen this clue in The Independent.

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