Temporary law
Temporary laws, temporary legislation or sunset legislation are laws whose duration is limited at the time of enactment. Temporary laws are often used to adapt for unusual or peculiar situations. Clauses limiting the duration of such laws are often called "sunset" clauses. Temporary laws are commonly given temporal validity by the inclusion of an expiration date at which the law ceases to be in effect unless it is extended. But a law can also acquire temporal status by stipulating that it only applies to a certain event. For example, only to the next election or only for victims  of a named catastrophe. Temporary laws are favored by adherents of experimentalist governance because it allows policy makers to conduct experiments and evaluate the effects of introducing legislation. Temporary laws are often easier to pass since they last for a shorter time. Temporary law should not be confused with "ratione temporis" or "temporal jurisdiction", which refer to the jurisdiction of a court of law in relation to the passage of time. Examples. Some examples of temporary laws: