The way the US chose to address accidents in rail was to armour plate their rail cars. In Europe they worked on better processes to ensure trains don’t run into

The way the US chose to address accidents in rail was to armour plate their rail cars. In Europe they worked on better processes to ensure trains don’t run into each other in the first place. The erosion of technical capability in rail is driven by the legislature. You have many states that will need to work together to completely abandon the US regulations on rail, adopt European regulations, and replace every piece of rolling stock to comply with the new regulations. That’s quite the undertaking, but achievable since the required expertise still exists outside the USA. The erosion of technical capability in nuclear power is likely unsolvable. There is no brains trust outside the USA from which to borrow the knowledge of metallurgy, concrete, site preparation, building design, or even design for manufacture. This is rebooting the entire industry from scratch to produce an unprofitable product.