It says a lot that the US isn’t beating poverty-stricken Cuba on this metric, considering the eye-watering prices that are extorted from patients.
The healthcare system is one of the few things in Cuba that isn't dysfunctional. It's said to be excellent.
Just another datapoint - the infant mortality is 5.6 US vs. 6.5 Cuba and under five mortality is 6.5 vs. 8.3.
The current admin is doing everything they can to stop this trend, but by making life worse in the island, as they don't want to do anything about the health of US citizens.