Andretti and Cadillac have been rejected for the 2025 season. Possibly could become a team in 2026, but the 10 current teams are heavily against an American entry and extra team on the grid.
Meh, that stinks. If they want to make more inroads in the US, they need a US team imo.
That said, the bigger issue is if Max and Red Bull continue their stranglehold on the #1 spot and races are decided after lap 1, then they'll have a hard time gaining more new fans.