You can't. A sentence can only be put into the passive if it has a transitive verb with a direct object. The sentence 'Have you ever been to the United States?' fulfills neither of those requirements.

I'm not sure that is possible. I believe the rule is that only transitive verbs can be used to make passive voice. Example: Active: I baked the bread Passive: The bread was baked by me. As a native speaker, I think what you are asking is not possible OR it would be really awkward :)

You would normally make passive sentences from transitive verbs only, i.e. ones which take a direct object. The word "been" is the past participle of "to be" but here it is really acting as the past participle of "to go". You cannot make passive sentences with "to be" as it does not technically take a direct object, and the verb "to go" cannot take a direct object either as it is "to go TO something", not "to go something". You can't make passive sentences from these verbs. "Has the United States ever been visited by you?" would be a passive sentence, but a rather strange thing to say!

Has the United States ever been a destination for you?