Why was the USSR concerned with the US soon after WWII?

I wouldn't say USSR was the only one concerned, both sides were suspicious about each other. The Russian thought they will be betrayed during the war, its very hard to explain but i will put it in short. USSR is communist and therefore america did not like communism and so the russians didnt trust the Americans. both sides wanted to spread there influence of ideology

Explanation:

both sides already didnt like each other since ww1 but had to throw away the hate for now to beat germany.

states

explanation:

as the old saying goes, all politics are local. state and federal governments affect our daily lives in numerous ways. yet, in our federal system, there is supposed to be a balance between federal and state power. as james madison envisioned it in federalist no. 51, “the power surrendered by the people” would be “divided between two distinct governments,” creating a balance of power that would enable the “different governments [to] control each other.”

aa dikha du tujhe mera wala dance