The pass exists only because Japan is an American client state; the butchers of Nanking and other monsters who staffed the imperial machine were pardoned and reintegrated by the American occupation regime and turned into a mercenary and advisor corps for the capitalist regimes of Korea and Taiwan

Examination into Japanese war crimes is treated with kids' gloves because eventually that investigation runs into the post-war period, where American collaboration with the fascists was the name of the game

All the genociders got off scot-free and were sipping champagne with US capitalists and intelligence agents for decades after the war