oof. so the only thing I can think of are:
he relates with this form of abuse because of some previous experience
he was bribed
I’m not sure what to tell you. if you tell him this is a deal breaker, and he doesn’t address it to your satisfaction, then you have your answer.
from what you laid out it sounds like textbook abuse and rape. can you get more facts about the case? or ask him why he classified it as sex with a minor?
if it was indeed textbook abuse and rape which he classified as a lesser offense, that’s something I might not be able to look past.
if you’re planning to leave because trump got elected, then be warned. the UK has similar problems
i went abroad as an immigrant too. some of the best friends I made were fellow immigrants from various countries. I got to know the Russian ones best and we are still in touch 20y later