The World Traditional Taekwondo Union (WTTU) was founded by H.U. Lee in the fall of 1990. The WTTU is a branch of the Songahm Taekwondo family that also consists of the American Taekwondo Association (ATA) and the Songahm Taekwondo Federation (STF). The ATA encompasses member schools in the United States and the STF includes member schools in South America. The WTTU covers the remaining portion of the world.