I wrote this already in another thread but I think it's more fitting here. I feel like the US is arguably the best 1v1 faction in the game right now, though not by a huge enough margin to warrant a lot of the complaints I've been seeing. The US has a lot of strengths in that they're great at taking territory but, but they have a hard time keeping it for prolonged periods of time. I just want to give my two cents about the faction as a whole:
1) The entire faction is built around riflemen. If they get nerfed, they have to be extremely well-thought out and reasonable nerfs. We can't have them turning panzergrenadier bad, or else the US faction will be the laughing stock of the game. I believe that the problem is blobbing, not the riflemen squad itself. A better change would just be a increased received accuracy to clumped units as others have suggested, which would both make rifle blobs more reasonable and improve the entire game's tactical value overall. Considering rifle blobs are basically the only "OP" complaint I see levied against the US faction besides the AA halftrack, I don't see why anybody would disagree with this.
2) AA Halftrack is great against Ostheer and good against Oberkommando. I'm more convinced that the reason it's so good against Ostheer is because of a deficiency with them not because America is OP. Keep in mind that this thing is 60 fuel and one of the few units people actually tend to build besides riflemen. It should be effective for its cost. I'm going to echo what I said with riflemen about overnerfs, because Relic has a tendency to overdo it with their balance changes. People don't need another reason to build nothing but one unit type.
3) ...why is their HMG 280 manpower instaed of 240? Especially after they got nerfed (excuse me, "bug-fixed"), it doesn't seem any better or worse than the MG42, except it comes out later. Maybe someone can correct me on this, because I personally don't see much difference in performance.
4) Pack howitzer is utterly worthless, but everyone knows that already. Either it needs a cost and population reduction to a normal mortar squad's, or (preferably) just gets a buff to be worth a damn. This thing had amazing AoE in the alpha and was a monster of an artillery piece. Now all it does is make a cool whooshing noise.
5) Is it just me, or are Shermans worse against tanks than T34/76's? It's like the vet 1 radio net ability is the sole reason Shermans are good, forcing you to spam them like riflemen. Their HE shell is odd, also. It has tremendous splash and damage, but it barely ever hits even when stationary. It really needs an accuracy increase and a splash decrease to make it more consistent.
6) The supervise ability on the captain is just stupid and adds more micro to an already micro-intensive faction. Nobody used the Wehrmacht Officer in the first game, so I have no idea why Relic thought people would enjoy a similar unit in the sequel. Is the captain supposed to be AT support, or a babysitter? Just cut down on the tank build times a little and get rid of supervise.
7) Rifle company is so good it invalidates every other American doctrine, in my opinion. The veteran riflemen ability could use some sort of change.
8) Rear Echelon troops need mines. There is quite literally no purpose to this unit whatsoever since volley fire got nerfed (it was stupid anyway). Vehicle crews can repair themselves, and US don't get sandbags except in one doctrine.
9) Having to pay 5 population just to have any sort of healing utility at all is annoying.
10) Last but not least, US early game is just flat-out boring because the only unit you can build is riflemen. No wonder people blob.
Honorable mention: Pershing. Pretty please?
United States
Relic Entertainment
cblanco ★ 
보드카 중대 
VonManteuffel 
Heartless Jäger 
