“No reasonable person, who has the benefit of advice from counsel, would submit to questioning in such a highly politicized, witch-hunt environment without assurances against unfair prosecution,” he said.
Congress and the executive branch have the power to grant immunity from prosecution in exchange for witness testimony or cooperation in an investigation. People granted immunity still can be prosecuted for perjury if they give false information.
Traditionally, investigators grant immunity when they believe a witness’s information is important to the investigation and might not be able to be obtained otherwise. During the investigation of Hillary Clinton’s use of a private email server, the FBI granted limited forms of immunity to some of her aides. Mrs. Clinton wasn’t charged in the matter.
A grant of immunity from Congress would require approval from two-thirds of the congressional committee requesting testimony or a majority vote in the full House or Senate. Congress would then need to notify the attorney general and get the approval of a district court judge."
https://www.wsj.com/articles/mike-flynn-offers-to-testify-in-exchange-for-immunity-1490912959
Congress and the executive branch have the power to grant immunity from prosecution in exchange for witness testimony or cooperation in an investigation. People granted immunity still can be prosecuted for perjury if they give false information.
Traditionally, investigators grant immunity when they believe a witness’s information is important to the investigation and might not be able to be obtained otherwise. During the investigation of Hillary Clinton’s use of a private email server, the FBI granted limited forms of immunity to some of her aides. Mrs. Clinton wasn’t charged in the matter.
A grant of immunity from Congress would require approval from two-thirds of the congressional committee requesting testimony or a majority vote in the full House or Senate. Congress would then need to notify the attorney general and get the approval of a district court judge."
https://www.wsj.com/articles/mike-flynn-offers-to-testify-in-exchange-for-immunity-1490912959