>Do we have conclusive evidence that causality isn’t actually reversed here in a large percentage of cases? >As in, a certain % of the population is, very unfortunately and not of their own volition, born with innate antisocial traits.

Assuming the certain % is something meaningful and not like 1% then:

Yes, given that America and the world has run the largest ever social experiment, America imprisoning a higher percentage of their population than any other country and most other countries continuing to thrive with lower crime numbers than America (in cases where countries do not thrive obvious external and environmental factors are seen) it follows that America, a nation of immigrants with higher heterogeneity of the population than other nations of the Earth, does not have a population with a greater percentage of the population genetically predisposed to anti-sociability.

America has a population where 1 in 3 adults has a criminal record. If criminality was in any significant way genetically hard-wired in Americans it seems difficult to believe the country would have lasted as long as it has, although I admit my argument here may be slightly weak given the current state of things, but I think one can argue that is not the fault of the anti-social population.