The key is that the second sentence makes no sense in English. You use the word 'like' in the present tense - 'I like coffee' or 'I like to eat toast' but if you are talking of the future, you need to modify that verb. 'I will like going to the USA' is possible, if clumsy, and states that you definitely will enjoy the experience, which seems odd as you can't know what will happen.
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