<P> Legal immunity, or immunity from prosecution, is a legal status wherein an individual or entity cannot be held liable for a violation of the law to facilitate societal aims that outweigh the value of imposing liability in such cases . Such legal immunity may be from criminal prosecution or from civil liability (being subject of lawsuit) or both . The most notable forms of legal immunity are diplomatic immunity, judicial immunity, and witness immunity . One author has described legal immunity as "the obverse of a legal power:" </P> <P> A party has an immunity with respect to some action, object or status, if some other relevant party--in this context, another state or international agency, or citizen or group of citizens--has no (power) right to alter the party's legal standing in point of rights or duties in the specified respect . There is a wide range of legal immunities that may be invoked in the name of the right to rule . In international law, immunities may be created when states assert powers of derogation, as is permitted, for example, from the European Convention on Human Rights' in times of war or other public emergency' . Equally familiar examples include the immunities against prosecution granted to representatives (MPs or councillors) and government officials in pursuit of their duties . Such legal immunities may be suspect as potential violations of the rule of law, or regarded as quite proper, as necessary protections for the officers of the state in the rightful pursuit of their duties . </P>

When can immunity from arrest of a member of congress not be invoked