There are many ways in which statements made under immunity can come back to prosecute a witness. Before providing information to the government in exchange for immunity, it is important to consult an experienced defense attorney who can explain the possible consequences and your rights. When deciding whether or not to grant immunity to a witness, the following factors are taken into account: Our editors will review what you have submitted and decide whether you want to revise the article. The second type of immunity that people often get is letter immunity. It is essentially a government agreement negotiated between the government and your lawyer. And what this kind of immunity gives you is a promise from the government that it will not use what you say against you, neither to find other evidence nor for any kind of prosecution. This is a relatively strong type of immunity and what it ultimately means is that in most cases, if you have this kind of immunity, you won`t be prosecuted later. Because if you`re prosecuted later, the government has to go to a hearing, an ethics hearing. You have to prove that all the evidence they`ve found and want to use against you doesn`t come from what you`ve told them before. In particular, qualified immunity protects a government official from prosecution alleging that he or she violated a plaintiff`s rights and allows actions only when officials have violated a “clearly established” legal or constitutional right. In determining whether a right has been “clearly established” or not, the courts consider whether a hypothetical reasonable official would have known that the defendant`s conduct infringed the plaintiff`s rights. The courts conducting this analysis apply the law in force at the time of the alleged offence, and not the law in force at the time the case is considered by the court.
In the United States, Congress can also grant criminal immunity (at the federal level) to witnesses in exchange for their testimony.  In the United States, the Crown may grant immunity in one of two forms. Transactional immunity, colloquially referred to as “general” or “total” immunity, fully protects the witness from future prosecution for crimes related to his or her testimony. Immunity from use and derivative use prevents the prosecution from using only the witness` testimony or other evidence from the testimony against the witness. However, if the prosecutor acquires evidence proving the crime, regardless of the witness` testimony, the witness may be prosecuted. The third type of immunity is called legal immunity. If you have legal immunity, it means that a federal district judge has considered the possible testimony you would give in a trial or grand jury trial and has decided that you have a legitimate right to the Fifth Amendment. You had the right not to say anything at all, and this judge, she orders you to speak in this case.
And in return, because you`re still entitled to the Fifth Amendment, what you say can`t be used against you, either directly in terms of those words used against you, or indirectly in terms of government finding other evidence to use against you. First, they can use what you say to gather evidence that they can use against you. For example, if you tell them you committed murder, they can`t use the fact that you told them you committed murder on you, but if they dig up a corpse where you told him it was and they find your driver`s license on the corpse, they can use the fact, that they found your driver`s license on the body against you. In other words, they can use the information to gather other evidence. In States where the accused have the right to testify on their own behalf in a grand jury trial, the waiver of immunity is a condition of that right. There are really three types of immunity that are most often talked about in such a situation, so let me talk about them. Under international treaties, a diplomatic representative is exempt from local jurisdiction, both civil and criminal. This diplomatic immunity also extends to the places of residence and residence of the representative. Witnesses who are subpoenaed to appear before a grand jury are entitled to immunity in exchange for their testimony.
The granting of immunity affects the witness` right to invoke protection from self-incrimination under the Fifth Amendment as the legal basis for refusing to testify. If you are involved in a federal investigation and you have information that the government wants or would find useful, one thing that could happen is that there will be immunity negotiations. You may be able to get some kind of immunity to share the information you have. However, there are limits to such immunity. For example, in 1997, the Republic of Georgia lifted the immunity of its second-highest diplomat after killing a 16-year-old girl while driving under the influence of alcohol. He was charged and convicted of manslaughter, for which he was imprisoned in North Carolina for three years before returning to Georgia, where he served another two years in prison. In Pearson v. Callahan, 555 U.S. 223 (2009), the Supreme Court ruled that while the sausage test is useful, it does not need to be used in applications for qualified immunity. On the contrary, a court of first instance should have more discretion as to the use of Saucier. The court also noted that “an officer conducting a search is entitled to qualified immunity if a clearly established law does not demonstrate that the search violates the Fourth Amendment.” State-level prosecutors may offer a witness transactional or derivative use and use immunity, but at the federal level, immunity for the use and use of derivatives is much more common.
[Citation needed] In rare cases, a former witness may waive immunity as soon as it is received. This allows the prosecution to bring charges against them based on their testimony. The waiver may be explicit, meaning that the witness signs a written waiver. .