Besides RESPA does the lender have any additional responsibilities?

Lenders are not allowed to discriminate in any way against potential borrowers. If you believe a lender is refusing to provide his or her services to you on the basis of race, color, nationality, religion, sex, familial status, or disability, contact HUD's Office of Fair Housing at 1-800-669-9777 (or 1-800-927-9275 for the hearing impaired).