Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. National Credit Union Insurance Fund was created by Congress in 1970 to insure deposits of credit union members in the amount of 100 thousand dollars. In the case of default the shareholder - individual will respond with its property and, in addition, is jointly and severally liable with the credit union's commitments. Corporate alliances are intermediaries between credit unions and financial markets.