CHICAGO — Malcolm Bush, an occasional critic of so-called mainstream credit unions work with lower income members and communities, has resigned as president of the Woodstock Institute to return to research in child welfare issues.

Bush had run the Woodstock Institute, a research organization specializing in housing and lending issues, since 1992. During his tenure the Institute occasionally issued reports arguing that credit unions were not living up to their obligations to serve lower income members and underserved communities and needed to be covered by the Community Reinvestment Act.

In a letter from the Woodstock Institute Board, Chairman Ada Skyles noted that Bush had been involved in research into child welfare issues prior to coming to Woodstock and had been involved in the founding of the Chapin Hall Center for Children at the University of Chicago, where he has returned.

The Institute is currently seeking an executive director.