Change of Status
How Do You Change Your Nonimmigrant Status While In the U.S.
If you want to change the purpose of your visit while in the United States, you (or in some cases your employer) must file a request with the U.S. Citizenship and Immigration Services (USCIS) on the appropriate form before your authorized stay expires.
In general, you may apply to change your nonimmigrant status if you were lawfully admitted to the United States with a nonimmigrant visa, your nonimmigrant status remains valid, you have not violated the conditions of your