Final answer:
There seems to be a mix-up of details regarding Jae Chul Shin and Jean Shin, as well as the formation of the United States TSD Federation. Relevant information regarding the specific location of the federation's formation is not provided in the reference text.
Step-by-step explanation:
It appears there may be some confusion surrounding the individuals being mentioned. Jae Chul Shin, a prominent figure in the martial arts community, is known for his involvement with Tang Soo Do and the foundation of organizations like the World Tang Soo Do Association. However, the provided reference texts mostly detail information about South Korea's political history, the city of Seoul, and the artist Jean Shin, none of which are directly relevant to the creation of the United States TSD Federation or its location.
Without additional context or specific historical details on Jae Chul Shin and the martial arts federation in question, providing an accurate city for the formation of the United States TSD Federation cannot be determined from the existing information. In situations where there might be a mix-up in names or specific details, it's important to cross-verify information to provide an accurate response.