Are there any official Nazi regiments or heros officially admired by the US? (In Russia you have the motorcyle gang with strong links to neonazism who are buddies with Putin edit: but upon a quick check, that might have been propaganda from the other side).
Azov on the other hand is not a "Nazi regiment", it's had troubling beginnings but it was cleared up as it was brought into army ranks.
EDIT: misread the question, in US there aren't 'regiments', but denying the fact that army is rife with supremacists is plain silly.
[Any] Army by itself is a magnet for these sorts of folks, and it takes active effort to weed them out, not something that a country at war can easily afford.
There were a few people there who flirted with neo nazism back in 2014. They were rooted out swiftly. There is a reason why every time you ask Russians for proof that Azov is Nazi they show the same old and / or manipulated photos.
Today Azov has representatives of most minorities in Ukraine, including "ethnic Russians" and Jews.
Meanwhile, one of the founders of Task Force Rusisch said something along this in an interview (IIRC and I don't speak Russian natively):
> Let's not mince words, I am not a "nationalist", I am a nazi.
Not any more than US or Russia itself