Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services. Until the mid-XX century, credit unions in the United States had little assets that did not exceed, as a rule, 100 thousand dollars The relationship between credit unions and shareholders arise from the membership and are not customer relationship. Standards by which credit unions build their work do not coincide with the standards and regulations of consumer cooperation of the usual type. Worldwide credit union movement is represented by regional confederations and national organizations within the World Council of Credit Unions. A potential new member of a credit union must submit a recommendation of shareholders in which the referee becomes a warrant of a future member of the credit union.