Final answer:
U.S. law allows law enforcement to lie to suspects during interrogations under certain conditions, while the UK has stricter regulations against deceptive techniques, requiring fairness and clear communication of a suspect's right to counsel.
Step-by-step explanation:
In the United States, it is legal for law enforcement officers to lie to suspects during interrogations in certain circumstances. This controversial technique is rooted in decisions like Miranda v. Arizona, which established that suspects must be informed of their rights, including the right to remain silent and to have an attorney. If suspects invoke their Miranda rights, interrogation must cease. However, police can lie about certain details, such as claiming a co-conspirator has confessed, to elicit confessions, as long as they are not coercing a confession or violating the suspect's rights.
In the UK, the law regarding police deception in interrogations is governed by the Police and Criminal Evidence Act 1984 (PACE) and the Criminal Procedure and Investigations Act 1996. Misleading a suspect is allowed to a certain extent, but there are stronger regulations against it compared to the US. For example, creating false evidence or making promises about the outcome of the case is prohibited. The UK law also requires that interrogations be conducted fairly and that suspects are informed of their right to counsel.