All I required was a short reply to my PM or a visitor message...
Oh, and historically the US Army was more than 10 million strong (or sth around that number)... They had 90 divisions because of a political decision - they decided that they wouldn't need more. In the event of an emergency, they would have been able to field a much larger army. The USA had sth like ~130 million people in 1940s IIRC. The USA also receive some bonuses, including MP ones, in my AAR. We also don't know at what level of mobilisation they are MP-wise.
Historical US problems with infantrymen replacements would be better represented by a lower reinforcement speed than by a MP shortage. They didn't really lack men, but they had trouble with training enough of them quick enough and sending them to Europe in time.
6000k MP doesn't mean that they will use it all for divisions, even for supply reasons alone. We don't lack MP, either, but so what? High losses still hurt us, our war exhaustion is still increasing and our officer ratio is decreasing.
EDIT: TBH the threat of "running out of MP" shouldn't be a real one in a typical game for a major country - the main concern should be the decreasing quality of recruits and a proper worker-to-soldier ratio.
good job we didn't invade the US mainland
That shouldn't really be possible

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