Examples of this range from unnecessarily high standards for admission into some craft unions, the serious limitations that the American Medical Association (AMA) enforced for many decades on admissions into medical schools in this country and on the use of paramedical personnel to perform many routine functions, to the limitation on the number or customers that a trucking firm could have or on the size of the brush that a painter could use. Even when a clear need for licensing exists, the inevitable result is also to restrict entry and competition, thereby increasing prices to consumers and profits to license holders. This is an important reason that most business, professional, and trads associations strongly support licensing and regulation and actively lobby against deregulation. For example, prices and profits in the trucking industry declined sharply in the early 1980s as a result of deregulation of the trucking industry (as well as the recession in the economy ) and the American Truckers’ Association petitioned Congress to bring back regulation.