usually you can stay beyond the internship and adjust your status to H1B, O1, F1, ... what you really need is a foot in the door and establishing your presence

usually you can stay beyond the internship and adjust your status to H1B, O1, F1, ... what you really need is a foot in the door and establishing your presence in the states. once you set your foot on american soil, it gets much easier. any visa is better than no visa