Neighborhood Christian Legal Clinic - Indianapolis, with locations throughout the city - Various forms of legal assistance, including immigration expertise, fair-housing. Also hosts Expungement HelpDesk in basement of CityCounty Building. Call for details.
Immigration Resources page here in the CityReaching wiki-knowledgebase.
Immigration Alliance - "A coalition of 15 evangelical church-based organizations that represent more than 28,500 churches in the United States, The Immigration Alliance is committed to dramatically multiplying the number of sites across the country providing low cost, high quality immigrant legal services over the next three years.