Recent increases in black migration to the suburbs and the continuing existence of discrimination in housing have emphasized the issues of integration and resegregation in suburban municipalities. To prevent resegregation, many integrated municipalities have adopted integration maintenance measures such as efforts to inform people that racial diversity will not lead to community decline; deliberate attempts to influence housing choices in order to promote racial diversity; school desegregation; and development schemes to prevent decline in racially mixed communities. It has been argued that integration maintenance tools are illegal, that they unfairly restrain the realty business, and that they discriminate against black homeowners and renters. Ethical considerations point to the possibility of integration maintenance policy being exploited to control black influx into a community by allowing entry only to more economically advantaged blacks or limiting blacks' housing choices. Both legal and ethical aspects must be considered in undertaking integration maintenance programs. Population data for Oak Park, Illinois, demonstrate that integration maintenance affected long term demographic trends and prevented resegregation in the community. The study of Oak Park, and similar studies in other areas may be of use in developing programs for fair housing and integration maintenance. (Author/MJL)