The latest domino in the realignment bonanza has fallen, and it has put the future of Conference USA in doubt. Southern Miss announced Tuesday that it has accepted an invitation to join the Sun Belt Conference, with the school making the move no later than July 1, 2023. 

"Today is a great day for Southern Miss. I want to thank Commissioner [Keith] Gill and the Board of Directors within the Sun Belt for their faith in our institution and our ability to add value to the conference," said Southern Mississippi athletic director Jeremy McClain. "We are excited about adding our rich tradition of success and passionate fan base to a conference that values those attributes, and look forward to working together to continue to elevate the Sun Belt on the national stage." 

Southern Miss has been a member of Conference USA since the creation of the league in 1995. It has five C-USA football championships under its belt, with the last one coming in 2011.