Expert witness testimony is governed by Washington, D.C.’s Rules of Civil Procedure, Rule 26. D.C. CODE ANN. § 5-26 (West 2017). This rule requires disclosure of the compensation paid to the expert to testify as such. Id. Along with this requirement, parties can make discovery requests for any information that is relevant to the case or a party’s position in the case, and information need not be admissible to be discoverable. Id.

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