Kang Family Are Newest Lifetime Members & Moo Duk Kwan® Preservationists U.S. Soo Bahk Do Moo Duk Kwan Moo Duk Kwan Federation | Posted on 02/16/2016 | Congratulations go out to the Kang Family who are the Federation’s newest Lifetime Members & Moo Duk Kwan® Preservationists!