They will not be the only squad on the grid from across the pond however, with Graeme Lowdon's GM-backed project set to join Haas as the second US F1 team.
Schumacher, son of F1 legend Michael, made his debut in the sport with Haas in 2021, racing under the leadership of Guenther Steiner until the young German was dropped from the lineup ahead of the 2023 season following a frosty relationship with the then Haas team principal.
Now, Schumacher's former boss has backed the 26-year-old for a seat with Cadillac despite only earning 12 points across his two seasons in F1 with Haas.
"I think Mick really has a chance," Steiner told RTL, as quoted by Formule1.NL.
"Cadillac needs a driver with Formula 1 experience, and there aren't many unemployed drivers right now, but they do have this experience," he declared.
Guenther Steiner was axed as Haas F1 team principal in 2023
Both Schumacher and Bottas share the same credentials of being an F1 test and reserve driver for Mercedes, a role which Steiner claimed would be a great help to Cadillac as they navigate their first few seasons in the sport.
"When he was a test driver at Mercedes, he didn't race, but he did learn a lot about a good, big team," Steiner continued. "This knowledge of how a successful team works can help Cadillac."
"I don't think they'll choose an American driver, because the risk is simply too great," the Drive to Survive star added.
"These guys have no Formula 1 experience, and that could quickly put Cadillac in trouble. Sergio Pérez, Valtteri Bottas, and Zhou Guanyu. They all have Formula 1 experience. Along with Mick Schumacher, they are my favorite candidates for Cadillac."
When discussing the chances of Schumacher's return, Steiner had nothing but praise for his former driver despite choosing to drop him from his own F1 lineup in the past, claiming the youngster is a 'hard worker' and a 'really nice guy.'