I know many countries require things like a JEVIC certificate to verify the mileage and also a JAII inspection to verify the car's safety and mechanical condition.
If Canada would allow ALL JDM cars into the country I would have no problem with our government requiring such certificates as it just makes good sense.
Does anyone know any specifics for other countries? I know a lot of Caribbean, African and Middle Eastern countries are huge importers of JDMs.