Defendants' Deposition

I have both corporate and individual defendants in a federal case. They contend they cannot be compelled to come to Oklahoma for their depositions. Is that true?

Answer: Cadent Ltd. v. 3M Unitek Corp., 232 FRD 625 (S.D. Cal. 2005) should get your research started: “The deposition of a corporation by its agents and officers should ordinarily be taken at its principal place of business. This is subject to modification, however, when justice requires. An important question in determining where to hold the examination is the matter of expense....”