What is the legal test for cross-examination of witnesses in a civil case?

need not come in the form of oral cross-examination of witnesses. Buckingham, 603 F.3d at 108283 (citing cases); see Brock, 481 U.S. at 266, 107 S.Ct. 1740. The opportunity to refute unfavorable evidence in some fashion, however, is an immutable principle of procedural due process: [W]here governmental action seriously injures an individual, and the reasonableness of the action depends on fact findings, the evidence used to prove the Government's case must be disclosed to the individual so that he has an opportunity to show that it is untrue. Greene v. McElroy, 360 U.S. 474, 496, 79 S.Ct. 1400, 3 L.Ed.2d 1377 (1959).