I'd recommend you take a long hard look around if you think fascism isn't possible in the US. The modern GOP is now predicated on a belief that the last election was stolen, and that they need to steal the next one to compensate. Fascism doesn't require a coup, and it's plausible that US fascism won't use one.
The US has always been fascist when it comes to international politics. First its reach was mostly limited to the Americas, but after World War 2 and the start of the Cold War, its fascist control spread across the globe.
It would be more of a surprise if the fascism they display internationally would never make it back to the US. After all, it is the same people making the decisions internationally and domestically, and the disappearance of the call logs from January 6th show that there are parts of the military open to negotiations.
Here, have a podcast about the subject: https://www.iheart.com/podcast/1119-it-could-happen-here-307...