12 C.F.R. § 263.53
(g) Protective orders. At any time during the taking of a discovery deposition, on the motion of any party or of the deponent, the ALJ may terminate or limit the scope and manner of the deposition upon a finding that grounds exist for such relief. Grounds for terminating or limiting the taking of a discovery deposition include a finding that the discovery deposition is being conducted in bad faith or in such a manner as to: