Business for non-usa citizen in America

Small business is very popular in United States because it helps anyone who is not employed and can't apply for employment because they are not American citizen but an immigrant from other countries. They are new in USA so employment is not the option for them but to stand for their own feet.
Tax here is also another thing to consider. This is the problem that arise for the small entrepreneur so by forming an llc or limitd liability corporation is the best way to minimize tax and can also minimize legal liability as well.

You can form a limited liability corporation like for example in real estates and other businesses too by just filling a simple form that is available in states web sites.