I have no idea what a true Kosher experience is...but the government version is here.
http://www.bop.gov/foia/certified_food_specifications.pdf
So I looked here for conformation...
https://en.wikipedia.org/wiki/Kosher_foods
It seems that the government makes every effort now to serve a Kosher meal, although it’s obvious they don’t go to extremes.
They serve kosher meals to the very small number who request and are qualified to receive them, not to the general population.
Maybe I misunderstood what you were claiming.