Fun Fact, the US can go communist with a single focus titled "Democratic Socialism" . The Communist ideology is not democratic in game, nor does it have elections
You can bring about fascism in the US by reintroducing the Gold Standard and the fascist America name is the "Confederated States of America", which requires you do to a focus at the end of a tree that you could very easily miss and be locked out of.
People keep talking about a USSR focus tree DLC like it's not just going to be: Stalin, Trotsky, Civil War to get Democrats/Fascists or the Tsardom because that's what every new HOI4 focus tree ultimately ends up being.
Another fun fact, according to how HOI4 classifies ideologies: the Royal Dictatorship in Romania, the Metaxas Regime in Greece, Brazil/Portugal's Estado Novo governments, Napoleonic France and the CNT-FAI Revolutionary anarchists in Spain are all in the same ideology group.
Oh also since someone mentioned war crimes, the Rape of Nanjing and the Holocaust are not mentioned whatsoever, but the Great Purge is implicitly supported because not purging people leads to a Trotskyite coup and civil war