The Ford class problem is resources, not foreign expertise

Why does the United States not ask Britain to fix the Ford-class carriers?

The United States can fix them itself; the central issue is whether it will fund the work at the price required to make the systems reliable.

The United States does not need Britain to rescue the Ford class. American yards and engineers can carry out the work, and British specialists could also be called if required. The limiting question is whether the responsible authorities will provide enough money to make all the troubled systems work at the required standard. An unrealistically low price point can preserve the failure even when the engineering path is understood.