Summary

Portrait of Hugo Black Hugo Black United States v. Bryan — Dissent

And no part of that history even tends to show that Congress meant to permit use of a witness' testimony to convict him of any crime other than perjury. There is a justifiable reason for the perjury exception. The crime consists of the testimony itself, without which no prosecution would be possible. Not so with default in producing papers. That crime is based not on a witness' testimony but rather on his failure to produce-conduct which can be proved by members of a committee, clerks, or spectators.
Source: Wikisource

Portrait of Hugo Black Hugo Black United States v. Bryan — Dissent

One who has failed to produce certainly could not be compelled to answer questions concerning his power to produce, thereby making him a 'witness against himself.' If application of the statute as Congress wrote it would lead to 'absurd conclusions,' so would the Fifth Amendment.
The Court finds comfort in the statement that the Committee testimony of witnesses is 'uniformly printed in the reports of committees recommending contempt action' to the houses of Congress.
Source: Wikisource

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