statute conferred complete immunity from prosecution as to any matter concerning which the petitioner might testify, and that, therefore, “you do not have any privilege to plead the Fifth Amendment.”
Thereupon the scene of the proceedings shifted to the courtroom, where the grand jury sought the aid of the district judge. After being apprised of what had transpired in the grand jury room, the. district judge heard extensive argument by counsel as to the scope of immunity afforded a grand jury witness under the applicable statute.
Following a weekend recess the district judge ruled that under the statute the petitiqner would be accorded immunity as extensive as the privilege he had asserted, and directed that the petitioner therefore return to the grand jury room and answer the questions. Later the same day the grand jury again returned to'the courtroom “to request the aid and assistance of the Court.” The district judge was advised through the official reporter that the petitioner had refused to obey the court’s order to answer the questions.
The judge then addressed the same questions to the petitioner in the grand jury’s presence. Each question was met with a refusal to answer upon the ground of possible self-incrimination. The petitioner was thereupon explicitly directed, by the judge to answer each question, and he just as explicitly refused. The judge inquired whether, the petitioner would persist in his refusal if he returned to the grand jury room and were again asked the questions there. The petitioner replied that he would. After further argument by counsel, the district judge held the petitioner in contempt and imposed sentence.
Throughout the proceedings in the courtroom the petitioner was represented by counsel, who unsuccessfully advanced three basic contentions: (1) A witness who testifies before a grand j'ury investigating offenses under the Motor Carrier Act is accorded no statutory immunity