Billy Tallyrand, as county assessor, entered into a fraudulent scheme at the urging of his son Tom, the county collector. Together they bilked the citizens of Lawrence County out of millions of dollars. After the scheme was discovered, Bill refused to testify against his son by claiming the 5th amendment prohibition against self incrimination. The county prosecutor then granted Bill immunity, but he still refused to testify. What punishment can the court inflict upon Bill to compel his testimony ?