In the U.S., credit unions have a clear organizational structure. All credit unions belong to one or the other parent credit union (there are 35 of them in the U.S.). Typically, donor contributions to the credit unions are targeted and used in the same statutory requirements and restrictions as the Mutual Financial Aid fund as a whole. In 1908. the spread of credit unions has reached the United States. In 1935 President Roosevelt signed the state Charter on credit unions, which became a law. Like the credit cooperatives, credit unions form associations of a higher level, which are called corporate credit unions. Credit unions also differ from the traditional consumer cooperatives. Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services.