Cooper, a well-off Illinois attorney with the Simmons Law Firm, has been attempting to get an MLS franchise in the St. Louis area for a number of years though his outreach group St. Louis Soccer United.
In a statement today, Simmons announced that he and the owners of soccer franchises formerly of the USL-1 conference in Atlanta, Miami, North Carolina, Minnesota, Montreal and Vancouver would form the new league.
"This will be a league that will offer the best of both worlds - outstanding experience and leadership at the ownership level combined with the promise and ability to chart our own course for success as a new league," said Cooper. "It's this structure that motivated me to bring St. Louis into the new league, and why I believe the new league will have a lot of success at launch next year and well into the future."
Simmons already owns the Saint Louis Athletica, a women's professional team that plays in Fenton.
No word yet on where the new team would play (Cooper has previously proposed building a stadium in Collinsville, Illinois) or what the new league is to be called.
Attempts to reach Cooper and other people behind the new league were unsuccessful. More news when/if they return our messages.
Updated: Read a Q&A with Cooper here.