Japan is considering tightening its screening of foreigners seeking to acquire Japanese nationality by potentially lengthening the current minimum five-year residency requirement, a source close to the matter said Tuesday, as it undertakes a review of policies on foreigners.The government of Prime Minister Sanae Takaichi may also take a tougher line in the application process over any previous nonpayment of taxes or social insurance premiums, the source said.Details will be ironed out before the government releases a comprehensive policy package regarding foreign residents and tourists in J…READ FULL ARTICLE