A totally genuine question - why are prong collars the norm in the US?
I am in the UK, and we rarely see prong collars on dogs over here. I have seen the odd one, but they are definitely not the norm. It may just be a cultural thing, but I think prong collars would be frowned upon over here for dogs, other than perhaps those training in Schutzhund/IPO. Even our police service dogs do not wear prong collars (although some still do wear check chains).
If your dog wears a prong, why did you come to the decision to use one in the first place?