It seems that a lot of people have worried that George Anthony can plead the 5th if he perjured himself in his testimony, both to the Grand Jury and the Depositions. Well he can’t. Casey can plead the 5th, but George cannot. Check it out:
This particular part explains it well:
A witness may not refuse to answer questions on the ground that the answers may reveal matters that may incriminate other persons (with the possible exception of married couples — see Spousal privilege).
As does this:
As federal grand juries have the power to subpoena individuals and force them to take the witness stand, defendants in such proceedings invariably refuse to answer any questions put to them, citing their Fifth Amendment rights. If the defendant does answer any question put by the prosecutor during the proceeding, the protection of the Fifth Amendment is lost.
George’s Grand Jury Testimony is sealed as it’s a “secret” proceeding. The State seeks to have it unsealed and provided to them to compare his testimony as he has changed his story in the Depositions, under oath. Also in the reports I’ve read George is a witness for the defense at this point. So in effect they are trying to destroy his credibility as a witness. If they find he’s perjured himself. Whether or not they are looking to charge him, only they know that. I just wanted to clarify that point to you.