Tom C. Clark,
Yates v. United States (355 U.S. 66…
“ The policy of the law must be to encourage testimony; a witness willing to testify freely as to all areas of investigation but one, should not be subject to more numerous charges of contempt than a witness unwilling to give any testimony at all.Having once carved out an area of refusal, petitioner remained within its boundaries in all her subsequent refusals. The slight modification on June 30 of the area of refusal did not carry beyond the boundaries already established. ”
