1. giving this to a witness means that he or she is free from the threat of prosecution.
perjury
subpoena
contempt
immunity
2. congressional committees may punish people who refuse to testify by
holding them in contempt.
issuing a subpoena.
arresting them for perjury.
giving them immunity.
3. through this power, congress can check on how the executive branch is administering the law.
immunity
legislative oversight
perjury
subpoena