It allows certain specified goods to be imported for processing or incorporation into finished products at the rate of Customs duty that would be applicable to the finished product, that is, zero, instead of the rate for the imported goods.

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In a letter to Steven Newman, CEO of Transocean, Rahall said records from the rig indicate 18 people at work on the second shift with "zero engineers, electricians, mechanics or subsea supervisors" on duty the night of the explosion.

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The Commission says it has "zero tolerance when it comes to fraud and the Commission's action is a reflection of our duty to protect the EU budget and EU taxpayers from a case of suspected fraud".

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