That's what I was thinking. IF these people's pardons are legit, then it seems like they could be compelled to testify against others.

IF the pardons are legit, they couldn't take the 5th because they couldn't incriminate themselves by telling the truth.

On the other hand, if they DIDN'T tell the truth on the stand, they would lose their immunity. So march them out there and have them blab about Hillary, Barry, Cheney, etc.