As an organization BRAT doesn't foster mixes, but sometimes individual members will, at their own expense. BRAT does maintain a Basenji mix adoption site, but the dogs on there are often ones belonging to other rescue organizations. Individual owners looking to place their B-mixes, I think, have to coordinate their own dogs. When I was BRAT's Basenji mix coordinator I often would coordinate the dogs, but I'm not sure if it's like that now. I know that there are certain individuals in BRAT that don't think BRAT should deal with B-mixes at all.
-Joanne