Alright, this is partially inspired by the "One Century" thread in the ASB forum. In that thread, Mexico was taken over by Nazi-analogs (called "Penlems" in that TL). They were racist against whites and hated Americans specifically. My question is this: Since the US had a history of interfering in Latin American countries with governments that they didn't like, how long could an anti-white fascist regime realistically survive in Mexico before the US attempts some sort of intervention?