The Cold War ended 30+ years ago.
They licensed the RD-180 for domestic production, Aerojet/RD/LM whatever took billions in R&D to do it and then punted because they were too lazy or incompetent (probably both) to actually do it.
https://www.nationaldefensemagazine.org/articles/2014/7/1/20...
They then went and asked for more money to use Bezos’ BE-4. Tell us how that has worked out…