Compared to the Soviets, the United States is so easy to play (I prefer combined-arms operations: Conscripts + Maxim + mortar in the further transition to the Shoock Troops). You have a powerful versatile Rifle squad and if you took the Heavy Cavalry Commander a wonderful Pershing аnd Rangers which are superior to Shoock Troops in range and damage (plus self-healing on the 2nd level of vet). After the Soviets overnerf - the US is simply a god in their background
Why not play Penals and have an easier game? Penals and if you want a Sniper(vs. Ost) or M3(vs. OKW) with 1-2 DshK and T70(+ another T70 or SU76) into Shermans deserves to be the meta right now because it´s just the most effective strat in most games.
Conscripts+Maxim+Mortar is just a bad idea after Maxim got nerfed. (especially in 1on1s) No wonder you find that very hard to play.
BTW: Try playing USF on Halbe against OKW. That´s probably about as unbalanced as it gets in 1on1.