The general rule is that a blanket assertion of the Fifth Amendment during a deposition is impermissible.
United States v. Bowe, 698 F.2d 560, 566 (2d Cir. 1983) (“[A] blanket assertion” of a Fifth Amendment privilege is insufficient);
United States v. Bates, 552 F.3d 472 (6th Cir. 2009) (finding that long standing rule that a blanket assertion is insufficient);
United States v. Schmidt, 816 F.2d 1477, 1482 (10th Cir. 1987);
United States v. Thornton, 733 F.2d 121, 125-26 (D.C. Cir. 1984);
United States v. Drollinger, 80 F.3d 389, 393 (9th Cir. 1996);
United States v. Goodwin, 625 F.3d 693, 701 (5th Cir. 1980);
General Dynamics Corp. v. Selb Manufacturing Co., 481 F.2d 1204, 1212 (8th Cir. 1973).
In fact, a witness invoking the privilege must do so for each question.
United States v. Argomaniz, 925 F.2d 1349, 1355 (11th Cir. 1991). Then, if counsel wishes to compel the testimony and/or test the validity of the assertion, the matter is taken before the court on a motion to compel. The court must review the assertions of the privilege on a question-by-question basis.
Id. This is sometimes accomplished in an
in camera proceeding wherein the witness is given the opportunity to substantiate his claims of the privilege and the district court is able to consider the questions asked and the documents requested.
See United States v. Roundtree, 420 F.2d 845, 852 (5th Cir.1969) (“The district court may then determine by reviewing ... records and by considering each question whether, in each instance, the claim of self-incrimination is well-founded.”).