there is something else i should know about the application. What type of document do I need if I am an international intern?
You will need to provide a letter from your sponsor. The letter should be on sponsor letterhead with an original signature that authorizes your employment.
What if I don't have permission to work?
Not sure if you are aware, but lawfully admitted non citizens can get many benefits and services without a Social Security number. For example, you can conduct business with a bank, register for school, and more.