Answer:
He was a communist.
Step-by-step explanation:
Hi there,
One of the reasons the United States opposed H Chi Minh was because he was a communist. Under the Domino Theory, the United States feared that other countries in Southeast Asia would fall to communism if they didn't interfere and stop the communists in Vietnam. This led to the American involvement in the Vietnam War and resulted in about 60,000 American deaths.
While this was probably the main reason the US disliked H Chi Minh, some people would provide another reason. Remember, there are usually many factors that played a role in historical events.
Hope my explanation gives you a better idea. Cheers.