Soo Do has had several members break off. Regardless, the Moo Duk Kwan as founded by Hwang Kee persists. Hwang Kee and a large constituent of the Moo Duk Kwan continued to develop a version of Tang Soo Do that eventually became what is now known as "Soo Bahk Do Moo Duk Kwan". This modified version of Tang Soo Do incorporates more fluid "soft" movements reminiscent of certain traditional Chinese martial arts. After death of Hwang Kee, the Moo Duk Kwan continues to represent Soo Bahk Do worldwide, and is headed by Hwang Kee's son, Hwang Hyun-chul. There are still a multitude of contemporary Taekwondo schools in the United States that teach what is known as "Moo Duk Kwan Taekwondo". This nomenclature reflects this government-ordered kwan merger. Present The World Tang Soo Do Association and the International Tang Soo Do Federation teach systems of Tang Soo Do that existed before the Taekwondo "merger" and before the development of modern Soo Bahk Do Moo Duk Kwan. These versions of Tang Soo Do are heavily influenced by Korean culture and also appear to be related to Okinawan Karate as initially taught in Japan by Gichin Funakoshi. The Amateur Athletic Union Taekwondo recognizes Tang Soo Do ranks, permits Tang Soo Do hyeong in competition and hosts non-Olympic-style point-sparring to accommodate the various traditional Korean stylists. American Tang Soo Do American Tang Soo Do was formed in 1966 by Chuck Norris, which is combination of Moo Duk Kwan-style Tang Soo Do, Judo and Karate (Shito-Ryu and Shotokan). Over the years it has been further developed by former black belts of his and their students. American Tang Soo Do's original governing body was the National Tang Soo Do Congress (NTC) founded in 1973 by Chuck Norris as its president and Pat E. Johnson as its vice-president and Chief of Instruction after breaking ties with the Moo Duk Kwan. In 1979, Norris dissolved the NTC and formed his current organization the United Fighting Arts Federation (UFAF) and named Johnson as executive vice president. In 1986, Norris promoted Johnson to ninth-degree black belt. At that time due to a philosophical difference of opinion with Norris, Johnson would leave the UFAF and reform the NTC as the governing body for American Tang Soo Do while Norris kept UFAF as the parent organization for his new martial arts system of Chun Kuk Do, in 1990. Despite Chuck Norris leaving