The American obstacle in this scenario is political economy rather than a lack of engineering capacity. Historical senatorial resistance to an all-turbine fleet reflected the maritime businesses supported by older engine production in particular districts. A British order for gas-turbine King George V-class battleships is the proposed trigger for American adoption. American implementation would probably come later, with the Iowa class as one possible point of adoption rather than a certainty.
Notable Point · 27:43-29:14
Why U.S. shipbuilding politics delay gas turbines
Established engine industries could delay American adoption until Britain committed to a gas-turbine battleship class.