Why did the united states objected to the soviet union controlling poland czechoslovakia hungary romania and bulgaria as satellite states?

The question refers to the time of the Cold War when the United States - a capitalist county - were competing with the Soviet Union - a communist country - for the world dominance.

The United States objected to Soviet Union having control over its satellite states because it influenced Soviet sphere of influence - that the US was also competing for (both countries wanted as big sphere of influence as possible)