That's the best you've got? He was endorsed by someone formerly from an agency that has nothing to do with the US Department of Transportation that regulates trains? That's literally the Bad Guy on team Bad Guys makes Bad Things happen argument I already gave.
If you'd dug even a little you'd see that the classification of these trains at a lower hazard level than probably warranted dates back at least to the Obama administration and probably further. So again, what does this have to do with JD Vance other than the steel man argument I already gave?
What do you know, slashing a bunch of environmental regulations.
Did you come across this in your efforts to figure out how someone could possibly believe Vance would support deregulation on the environment?