Dreaming that you are granted a US visa, has the symbolic significance of the state of being free within society from oppressive restrictions imposed by authority. US Visa in the dream also represents how you feel about the United States and what it means for you. As example, if the US stands for freedom, then being granted a visa from the US may demonstrate your life situation in which you experience some newly founded liberty. It may represent that you may be travelling through an unfamiliar area in order to learn about something.
Dream dictionary: free.visa dream meanings
Dreaming that you obtain a visa to visit other countries represents that you feel isolated and want to free yourself. On the other hand, it can mean that you want certain things to happen.